Caracterización epidemiológica de pacientes con síndrome posterior a resección anterior baja de recto y aproximación de su relación con aspectos demográficos, patológicos y quirúrgicos, en un centro de referencia en Medellín, entre 2016-2022 / Epidemiological characterization of patients with post-low anterior rectal resection syndrome and approximation of its relationship with demographic, pathological, and surgical aspects, in a referral center in Medellin, between 2016-2022

Introducción. El cáncer colorrectal es uno de los tipos de cáncer más comunes y mortales a nivel mundial. Aunque los avances médicos han mejorado el manejo, la cirugía sigue siendo fundamental. La resección anterior baja (RAB) de recto ha ganado relevancia, a pesar de que puede llevar al síndrome de resección anterior baja de recto (LARS, por sus siglas en inglés), afectando la calidad de vida. Métodos. Estudio de corte transversal con intención analítica en un centro de referencia en Medellín, Colombia. Los pacientes con cáncer de recto sometidos a RAB entre enero de 2016 y diciembre de 2022 completaron el cuestionario LARS para evaluar disfunción intestinal. Se evaluaron factores relacionados con la presencia de LARS por medio de un análisis bivariado. Resultados. De 234 pacientes elegibles, 110 (47 %) respondieron la encuesta, predominantemente mujeres (58,2 %). La edad promedio fue 62 años. Dos tercios de los pacientes recibieron neoadyuvancia y el 69 % requirieron ileostomía. La prevalencia de LARS fue 47,3 %. El 80,9 % llevaban más de 12 meses desde la cirugía o el cierre del estoma. Factores estadísticamente significativos asociados a LARS fueron edad mayor de 65 años (p=0,03), estadío patológico avanzado (p=0,02) y requerimiento de estoma (p=0,03). Conclusiones. El LARS afecta a casi la mitad de los pacientes en diferentes etapas posquirúrgicas. El LARS scorees una herramienta práctica para evaluar la función intestinal en el seguimiento del paciente. La prevalencia y los factores de riesgo identificados contribuyen a la comprensión del impacto de la cirugía conservadora del esfínter en la calidad de vida de los pacientes.

Introduction. Colorectal cancer is one of the most common and deadly types of cancer worldwide, with a high incidence of rectal cancer. Although medical advances have improved management, surgery remains crucial. Low anterior resection of the rectum (LAR) has gained significance, despite its potential to lead to low anterior resection syndrome (LARS), affecting quality of life. Methods. A cross-sectional study with analytical intent was conducted at a referral center in Medellín, Colombia. Patients with rectal cancer who underwent LAR between January 2016 and December 2022 completed the LARS questionnaire to assess intestinal dysfunction. Factors related to the presence of LARS were analyzed using bivariate analysis. Results. Of 234 eligible patients, 110 (47%) responded, predominantly women (58.2%). The average age was 62 years. Two-thirds of patients received neoadjuvant therapy and 69% required ileostomy. The prevalence of LARS was 47.3%. 80.9% had been more than 12 months post-surgery or stoma closure. Statistically significant factors associated with LARS included age over 65 years (p=0.03), advanced pathological stage (p=0.02), and stoma requirement (p=0.03). Conclusions. LARS affects almost half of the patients in various post-surgical stages. The LARS score is a practical tool for assessing intestinal function in patient follow-up. The prevalence and risk factors identified contribute to the understanding of the impact of sphincter-conserving surgery on patients' quality of life.

Usefulness of Preoperative Anorectal Manometry for Ostomy Closure: A Cross-sectional Study / Utilidad de la manometría anorrectal prequirúrgica para el cierre de ostomías: un estudio de corte transversal

Abstract Introduction: For several reasons, a patient may be taken to a colostomy for closure as soon as possible. However, their treatment may vary, and predicting adequate continence after colostomy closure can be difficult. The objective is to characterize preoperative manometry because, in Colombia, few cases describe its usefulness. Methods: A descriptive cross-sectional study of adult patients treated in two gastroenterology centers in Colombia between 2018 and 2020. Results: Of 316 patients, 13 were indicated manometry before colostomy closure, predominantly women (69%), with an average age of 51.69 years (standard deviation: 24.18). When evaluating the basal pressures of the anal sphincter, we noted 68% hypotonia, 16% hypertonia, and 16% normal pressures. The voluntary contraction test was abnormal in 25%, and a pattern of dyssynergic defecation was observed in 30%, all with type III patterns. The inhibitory rectoanal reflex was present in 92%, with an abnormal balloon expulsion test in 100% of patients. More than 70% of patients persisted with the colostomy in situ after the first year of construction and 30% beyond 36 months. Conclusions: The present study posits questions about the cost-effectiveness of anorectal manometry before colostomy closure, which requires corroboration by studies with more patients and more robust methodological designs.

Resumen Introducción: Hay varias razones por las que un paciente puede ser llevado a una colostomía con el objetivo de cerrarla lo antes posible, pero su tratamiento puede variar, y predecir una adecuada continencia posterior al cierre de la colostomía puede ser difícil. Se plantea como objetivo realizar una caracterización de la manometría prequirúrgica debido a que en Colombia hay pocos casos que describan su utilidad. Metodología: Estudio observacional descriptivo de corte transversal en pacientes adultos atendidos en dos centros de gastroenterología en Colombia entre el 2018 y el 2020. Resultados: De 316 pacientes, 13 tenían indicación de manometría previo a cierre de colostomía, predominantemente mujeres (69%), con una edad promedio de 51,69 años (desviación estándar: 24,18). Al evaluar las presiones basales del esfínter anal, se evidenció 68% de hipotonía, 16% de hipertonía y 16% de presiones normales. La prueba de contracción voluntaria fue anormal en el 25%, se observó un patrón de disinergia defecatoria en el 30%, todas con patrón tipo III. El reflejo rectoanal inhibitorio estuvo presente en el 92%, con prueba de expulsión de balón anormal en el 100% de los pacientes. Más del 70% de los pacientes persistían con la colostomía in situ después del primer año de su construcción y 30% más allá de 36 meses. Conclusiones: El presente estudio genera cuestionamientos acerca la costo-efectividad de la manometría anorrectal previa al cierre de colostomía, lo cual requiere ser corroborado por estudios con una mayor cantidad de pacientes y diseños metodológicos más robustos.

Uso de stent en estenosis colorrectal benigna / Stent utilization in benign colorectal stenosis

Introducción. La estenosis colorrectal benigna hace referencia a una condición anatómica caracterizada por una disminución del diámetro de la luz intestinal distal a la válvula ileocecal, ocasionando una serie de signos y síntomas de tipo obstructivo. Es una entidad poco frecuente, secundaria en la gran mayoría de veces a la realización de anastomosis intestinales al nivel descrito. El objetivo de esta investigación fue determinar la utilidad del stentcolónico en estenosis secundaria a patología colorrectal no neoplásica. Métodos. Estudio descriptivo de una cohorte de pacientes que desarrolló estenosis colorrectal de origen benigna confirmada por colonoscopía, en 3 hospitales de alta complejidad de la ciudad de Medellín, Colombia, entre los años 2007 y 2021. Resultados. Se incluyeron 34 pacientes con diagnóstico de estenosis colorrectal de origen benigno, manejados con stents metálicos autoexpandibles. La mediana de seguimiento fue de 19 meses y se obtuvo éxito clínico en el 73,5 % de los casos. La tasa de complicación fue del 41,2 %, dada principalmente por reobstrucción y migración del stent, y en menor medida por perforación secundaria a la colocación del dispositivo. Conclusión. Los stents metálicos autoexpandibles representan una opción terapéutica en pacientes con obstrucción colorrectal, con altas tasas de mejoría clínica en pacientes con patología estenosante no maligna. Cuando la derivación por medio de estoma no es una opción, este tipo de dispositivos están asociados a altas tasas de éxito clínico y mejoría de la calidad de vida de los pacientes

Introduction. Benign colorectal stenosis refers to an anatomical condition characterized by a decrease in the diameter of the intestinal lumen distal to the ileocecal valve, which might cause a series of obstructive signs and symptoms. It is a rare entity, caused in the vast majority of cases due to intestinal anastomosis at the described level. The purpose of this study is to determine the performance of colonic stents in the management of non-malignant colorectal strictures. Methods. Descriptive study of a cohort of patients who developed a benign colorectal stenosis confirmed by colonoscopy in three high-complexity hospitals in the city of Medellín, Colombia, between 2007 and 2021. Results. Thirty-four patients diagnosed with benign colorectal stenosis managed with self-expanding metal stents were included in the study. Median follow-up was 19 months, obtaining clinical success in 73.5% of cases, with a complication rate of 41.2%, mainly due to reobstruction and migration of the stent, and to a lesser extent due to perforation secondary to device placement.Conclusion. Self-expanding metallic stents represent a therapeutic option in patients with colorectal obstruction caused by non-malignant stenosing pathology. When diversion through a stoma is not an option, this type of device is associated with high rates of clinical success and improvement in the patients' quality of life

Correlation of endoscopic findings with suspected intestinal endometriosis in the distal sigmoid and rectum as observed on transrectal ultrasonography

Introduction: Colonoscopy enables detailed endoscopic evaluation of the interior of the colon. Changes observed via colonoscopy may be subtle or pronounced and can sometimes mimic those of other diseases, such as deep intestinal endometriosis. The diagnosis of endometriosis in the distal sigmoid and rectum by colonoscopy has been described in previous case reports. Objective: We aimed to correlate the endoscopic changes found in the distal sigmoid and rectum with the presence of endometrial deposits confirmed by transrectal ultrasound (TRUS). Methods: We included 50 female patients referred to the endoscopy department at our institution for colonoscopy, rectosigmoidoscopy, or TRUS, who exhibited one or more symptoms associated with endometriosis. Results: The colonoscopic findings were normal in 36 patients but showed alterations in 14 patients. Among the latter, TRUS revealed involvement of the sigmoid and/or rectal wall in 11 patients. Conclusions: The endoscopic changes in the distal sigmoid or rectum described in this study were strongly associated with endometrial deposits confirmed using TRUS. (AU)

Diseño de un protocolo de intervenciones de enfermería para personas con enfermedades anorrectales que requieren cirugía ambulatoria / Design of a Protocol for Nursing Interventions for People with Anorectal Diseases Requiring Ambulatory Surgery

Introducción: Las intervenciones de enfermería son tratamientos basados en el conocimiento y juicio clínico que realizan estos profesionales. En la cirugía ambulatoria de enfermedades anorrectales se constata variabilidad en la elección correcta de estas intervenciones y falta de sustitución de personal calificado para realizarla. Objetivo: Diseñar un protocolo de intervenciones de enfermería para personas con enfermedades anorrectales que requieren cirugía ambulatoria. Métodos: Estudio de desarrollo, descriptivo transversal, contextualizado en hospitales de la provincia Camagüey con servicios de Cirugía Ambulatoria, desde enero de 2018 hasta septiembre de 2021. Fueron seleccionados los especialistas para elaborar la propuesta. En una primera reunión se siguieron las recomendaciones de las Guías de elaboración de protocolos basados en la evidencia, se identificaron intervenciones de enfermería por lluvia de ideas. En una segunda reunión se registraron las sugerencias y se presentó el protocolo. Resultados: Se seleccionaron siete especialistas competentes. La primera versión del protocolo quedó diseñada con el consenso del 100 por ciento de los especialistas. El protocolo contempla 14 ítems, las intervenciones de enfermería se presentan con códigos numéricos, denominación y definición, así como las actividades para ejecutarlas en cada etapa que comprende el período perioperatorio. Se selecciona el nivel de evidencia correspondiente a cada intervención de enfermería. Conclusiones: Se diseñó un protocolo de intervenciones de enfermería para personas con enfermedades anorrectales que requieren cirugía ambulatoria, basado en el consenso de especialistas, donde se describen las intervenciones de enfermería a ejecutar en cada etapa del período perioperatorio, de forma ordenada y justificadas con el nivel de evidencia correspondiente(AU)

Introduction: Nursing interventions are treatments based on the knowledge and clinical judgment performed by these professionals. In ambulatory surgery for anorectal diseases, there is variability in the correct choice of these interventions and lack of substitution of qualified personnel to perform them. Objective: To design a protocol of nursing interventions for people with anorectal diseases requiring ambulatory surgery. Methods: Development study, descriptive transversal, contextualized in hospitals in Camagüey province with Ambulatory Surgery services, from January 2018 to September 2021. Specialists were selected to elaborate the proposal. In a first meeting, the recommendations of the Guidelines for the elaboration of evidence-based protocols were followed, nursing interventions were identified by brainstorming. In a second meeting, suggestions were recorded and the protocol was presented. Results: Seven competent specialists were selected. The first version of the protocol was designed with the consensus of 100.00 percent of the specialists. The protocol contemplates 14 items, the nursing interventions are presented with numerical codes, denomination and definition, as well as the activities to execute them in each stage comprising the perioperative period. The level of evidence corresponding to each nursing intervention is selected. Conclusions: A protocol of nursing interventions for people with anorectal diseases requiring ambulatory surgery was designed, based on the consensus of specialists, where the nursing interventions to be executed in each stage of the perioperative period are described, in an orderly manner and justified with the corresponding level of evidence(AU)

Beneficios sociales del protocolo de intervenciones de enfermería a pacientes con cirugía ambulatoria de enfermedades anorrectales

RESUMEN El presente estudio pretende demostrar los beneficios sociales de un protocolo de intervenciones de enfermería a pacientes con cirugía ambulatoria de enfermedades anorrectales. Se realizó una revisión bibliográfica sistemática para hacer un análisis crítico reflexivo del contenido de artículos originales y de revisión publicados entre 2015 y 2021 en español, portugués e inglés. La búsqueda fue realizada en las bases de datos Medline, Pubmed y SciELO de enero a junio de 2021, en función de los presupuestos teóricos de una investigación realizada en el salón ambulatorio del Hospital Universitario Provincial Manuel Ascunce Domenech. Se constató la importancia de los protocolos de atención, ya que son de relevancia, para que cada profesional socio sanitario asuma que su participación es vital para el bienestar de la persona.

ABSTRACT This research aims to demonstrate the social benefits of a nursing intervention protocol for patients with outpatient surgery for anorectal diseases. A systematic bibliographic review was carried out to make a reflexive critical analysis of the content of original and review articles published between 2015 and 2021 in Spanish, Portuguese and English. The search was carried out in the Medline, Pubmed and SciELO databases from January to June 2021, based on the theoretical assumptions of an investigation carried out in the outpatient operating room of the provincial university hospital "Manuel Ascunce Domenech". The importance of care protocols was confirmed, since they are relevant, so that each socio-health professional has in his actions the certainty that his intervention is vital for the well-being of the person.

Úlcera rectal solitaria como simulador de cáncer colorrectal y enfermedad de Crohn: reporte de caso / Solitary rectal ulcer simulating colorectal cancer and Crohn's disease: Case report

Resumen La úlcera rectal solitaria es una patología poco frecuente de naturaleza benigna que debe diferenciarse de otras entidades en su presentación inicial, con mecanismos fisiopatológicos definidos y con sintomatología variada. Se presenta el caso de una paciente de 31 años sin antecedentes de importancia, que consultó a nuestra institución por un cuadro de 3 años de sangrado rectal asociado con episodios de diarrea, manejada con múltiples diagnósticos.

Abstract Solitary rectal ulcer is a rare condition of benign nature that must be differentiated from other disorders with defined pathophysiological mechanisms and varied symptoms. The following is the case of a 31-year-old female patient with no relevant history, who consulted our institution due to symptoms of rectal bleeding associated with episodes of diarrhea for three years, who received multiple diagnoses.

Anorectal diseases in patients with Antiphospholipid syndrome: a cross-sectional study

Abstract Background: Hemorrhoid disease (HD) is one of the most common gastrointestinal complaints worldwide, affecting 4.4% of the general population in the United States. Since antiphospholipid syndrome (APS) may lead to intra-abdominal thrombosis, one may expect that this condition can impact the risk for HD development. Additionally, as APS patients are more prone to thrombosis and treatment with anticoagulants may increase risk of bleeding, one may also infer that rates of HD complications may be higher in this scenario. Nevertheless, no data in these regards have been published until now. The objective of the present study is to evaluate frequency of HD and describe its complications rates in antiphospholipid syndrome APS patients. Methods: We consecutively invited patients who fulfilled APS criteria to undergo proctological examination. After examination, patients were divided in two groups, based on the presence of HD, and compared regarding different clinical manifestations and antiphospholipid profile. We performed the analysis of the data, using chi-square and Mann Whitney U when applicable and considering a significance level of 0.05. Multivariate regression analysis included age and variables with p < 0.10 in the bivariate analysis. Results: Forty-one APS patients agreed to undergo proctological examination. All were female and overall median age was 43 (36-49). Seventeen (41.4%) patients were diagnosed with HD, with the following frequency distribution: 7 internal (41.2%), 4 external (23.5%) and 5 mixed hemorrhoids (29.4%). Of the internal hemorrhoids, 5 patients were classified as grade I (71.4%), 1 grade II (14.3%), and 1 grade IV (14.3%). Prior gestation ( p = 0.067) and constipation ( p = 0.067) correlated with a higher frequency of HD. In multivariate analysis, constipation remained as an important risk factor (OR 3.92,CI95% 1.03-14.2, p = 0.037). Five out of 17 patients (29.4%) reported anal bleeding, but it did not correlate with warfarin dose ( p = 0.949). Surgical treatment was indicated for 10 patients (58.8%). Other anorectal findings were anal fissure, plicoma, condyloma and one chlamydial retitis. Conclusion: We found an unexpected high frequency of hemorrhoids in APS patients, with a great proportion requiring surgical treatment.(AU)

Surgical Treatment of Rectal Prolapse: A 10-Year Experience at a Single Institution

PURPOSE: Despite the plethora of surgical options, there is no consensus regarding the best treatment for rectal prolapse. This study is aimed at evaluating our experience with its treatment and outcomes.METHODS: We retrospectively reviewed rectal prolapse patients' characteristics, clinical presentation, surgical procedure, average length of hospital stay, morbidity, mortality, and recurrence over a 10 year period at our institution.RESULTS: A total of 46 patients underwent rectal prolapse repair at our institution over a 10 year period. Of the 39 patients with primary rectal prolapse, 18 patients had an abdominal procedure, while 21 patients underwent a perineal approach. Operative duration was significantly longer in abdominal procedures, of which 16 cases were performed laparoscopically. Length of hospital stay and recurrence were not statistically significant between the 2 groups. In patients with recurrent rectal prolapse, more than 80% of the initial surgeries were done using the perineal approach. An abdominal approach was utilized in the management of 75% of recurrences.CONCLUSION: An abdominal repair may be preferable in the treatment of recurrent rectal prolapse. Minimally invasive techniques may be feasible and can provide a safe alternative to perineal procedures in elderly patients.

Clinical effect of combination of traditional Chinese and western medicine in the treatment of postoperative pain of anorectal disease / 中国基层医药

Objective To investigate the effect of integrated traditional Chinese and western medicine in the treatment of postoperative pain in patients with anorectal diseases. Methods From November 2015 to October 2017, 70 patients with anorectal diseases underwent surgical treatment in the First People 's Hospital of Yongkang were selected. The simple western medicine treatment was performed in 35 patients with anorectal diseases in the control group,and 35 patients in the observation group were given combined Chinese and western medicine. The total effective rate of the two groups was observed and calculated. The pain score at 2 h,6 h,12 h and 24 h after operation,the incidence rate of postoperative complications were observed. Results The total effective rate of the control group (80. 00％ ) was lower than that of the observation group (97. 14％ ),the difference was statistically significant(χ2 =5. 080,P < 0. 05). The pain scores at postoperative 2h,6h,12h,24h in the control group were (2. 0 ± 0. 5) points, (3. 6 ± 1. 0)points,(4. 5 ± 1. 0)points,(5. 0 ± 1. 2)points,respectively,which in the observation group were (1. 4 ± 0. 2)points,(2. 0 ± 0. 6)points,(2. 4 ± 0. 5)points,(2. 3 ± 0. 4)points,respectively,the differences were statistically significant(t = 6. 591,8. 116,11. 112,8. 116,all P < 0. 05). The incidence rate of postoperative complications in the control group (17. 14％ ) was higher than that in the observation group (2. 86％ ),the difference was statistically significant(χ2 = 3. 968,P < 0. 05). The total satisfaction rate of the control group (74. 29％ ) was lower than that of the observation group (94. 29％ ),the difference was statistically significant(χ2 = 5. 285,P < 0. 05). Conclusion The combination of traditional Chinese and western medicine is effective in the treatment of postoperative pain in patients with anorectal diseases,which can increase the effective rate and improve the quality of life of the patients, and it is worthy of clinical application.

Anoplastia com plicoma sentinela para o tratamento de fissura anal crônica / Anoplasty with skin tag flap for the treatment of chronic anal fissure

RESUMO Objetivo: avaliar os resultados de longo prazo da correção de fissuras anais crônicas em pacientes sem hipertonia anal usando a técnica de anoplastia com o plicoma sentinela. Métodos: estudo prospectivo de pacientes com fissura anal crônica refratários ao tratamento conservador e sem hipertonia anal, submetidos à operação de anoplastia com utilização do plicoma anal para cobrir a área cruenta. Foi confirmada a ausência de hipertonia anal através do toque retal e da eletromanometria. Foi aplicado um questionário de dor visual e o escore de incontinência fecal da Cleveland Clinic, antes e após a cirurgia. Resultados: quinze pacientes com fissura anal crônica foram acompanhados por um período médio de 29 meses (12 a 56). A média de idade foi 41 anos (29 a 69) e a duração dos sintomas variou entre seis meses e cinco anos. A cicatrização ocorreu entre três e seis semanas para 13 pacientes (86,7%). Os outros dois pacientes foram submetidos a desbridamento e nova anoplastia, com sucesso. Em nenhum paciente ocorreu necrose do plicoma ou estenose anal. O escore de incontinência anal não se alterou após o procedimento e todos os pacientes referiram melhora da dor. Após 12 meses de seguimento, nenhum paciente apresentou recorrência ou incontinência anal e 93,3% (14/15) dos pacientes responderam estar muito satisfeitos. Conclusão: fissurectomia e anoplastia com o uso do plicoma sentinela é uma técnica segura que resulta em melhora da dor sem alterações da continência fecal e com altas taxas de satisfação.

ABSTRACT Objective: to evaluate the long-term results of the correction of chronic anal fissures (CAF) in patients without anal hypertonia using the technique of anoplasty with skin tag flap. Methods: we conducted a prospective study of CAF patients refractory to conservative treatment without anal hypertonia, subjected to anoplasty with the use of anal plicoma to cover the bloody area. We confirmed the absence of anal hypertonia through rectal exam and electromanometry. We applied a visual pain questionnaire and the Cleveland Clinic fecal incontinence score before and after surgery. Results: we followed 15 patients with chronic anal fissure for a mean period of 29 months (12-56). The mean age was 41 years (29-69) and the duration of symptoms ranged from six months to five years. Healing occurred between three and six weeks for 13 patients (86.7%). The other two patients underwent debridement and new anoplasty successfully. No plicoma necrosis or anal stenosis occurred in any patient. The anal incontinence score did not change after the procedure, and all patients reported reduced pain. After 12 months of follow-up, none of the patients presented recurrence or anal incontinence, and 93.3% (14/15) of the patients were very satisfied. Conclusion: fissurectomy and anoplasty with the use of sentinel plie is a safe technique that results in improvement in pain without change of fecal continence and with high satisfaction rates.

Continence changes following transanal endoscopic microsurgery result from the impact on rectal capacity: clinical and functional evaluation before and after surgical treatment / Alterações da continência após microcirurgia endoscópica transanal resultam do impacto sobre a capacidade retal: avaliação clínica e funcional antes e após tratamento cirúrgico

ABSTRACT Introduction: Described in 1983 and with a stable clinical application, the impact of Transanal Endoscopic Microsurgery on anorectal function remains unknown. The objectives of the present study were to evaluate the impact of Transanal Endoscopic Microsurgery on anorectal function according to clinical (Wexner score) and functional (anorectal manometry) evaluations before and after surgery. Method: Prospectively, 23 consecutive patients with rectal lesions were operated using TEO® equipment (Karl Storz, Tuttlingen, Germany). For all patients, the value of Wexner score was obtained before and after surgery (7, 30 and 90 days) and anorectal electromanometry was performed before surgery, and also postoperatively (30 and 90 days). Results: Fourteen patients were men. The mean age was 53.7 (24-81) years. The mean distance from the lesion to the pectineal line was 7 (2-15) cm. The histopathologic analysis revealed adenoma in 14 (61%); neuroendocrine tumor in 5 (21.7%); invasive carcinoma in 3 (13%); and hyperplastic polyp in 1 (4.3%) case. The mean duration of postoperative follow-up was 5 (3-7) months. Wexner score was significantly lower at 30 days compared to 7 days (Wilcoxon; p = 0.03). Rectal capacity was significantly lower 30 days after surgery and recovered at 90 days of surgery (ANOVA; p = 0.04). Conclusions: After Transanal Endoscopic Microsurgery, a modest impact on anorectal function can be observed. The transient impairment results from loss of rectal capacity and not from impairment of the anal sphincters, being completely resolved 90 days after surgery.

RESUMO Introdução: Descrita em 1983 e de sólida aplicação clínica, o impacto da Microcirurgia Endoscópica Transanal sobre a função anorretal permanece pouco conhecido. Os objetivos do presente estudo foram avaliar o impacto da Microcirurgia Endoscópica Transanal na função anorretal conforme avaliações clínica (Wexner score) e funcional (manometria anorretal) antes e após a cirurgia. Método: Prospectivamente, 23 pacientes consecutivos com lesões retais foram operados com o uso do equipamento TEO® (Karl Storz, Tuttlingen, Alemanha). Para todos os pacientes, o valor do escore de Wexner foi obtido antes e após a cirurgia (7, 30 e 90 dias) e a eletromanometria anorretal foi realizada antes da cirurgia e também no pós-operatório (30 e 90 dias). Resultados: Quatorze pacientes eram homens. A idade média foi 53,7 (24-81) anos. A distância média da lesão à linha pectínea foi de 7 (2-15) cm. A histopatológica revelou adenoma em 14 (61%), tumor neuroendócrino em 5 (21,7%); carcinoma invasivo em 3 (13%) e pólipo hiperplásico em 1 (4,3%) caso. A duração média do seguimento pós-operatório foi de 5 (3-7) meses. O escore de Wexner foi significativamente menor aos 30 dias em comparação com 7 dias (Wilcoxon; p = 0,03). A capacidade retal foi significativamente menor aos 30 dias após a cirurgia e recuperada aos 90 dias após a cirurgia (ANOVA; p = 0,04). Conclusões: Após Microcirurgia Endoscópica Transanal, um impacto modesto na função anorretal pode ser observado. O comprometimento transitório resulta de perda de capacidade retal e não por comprometimento dos esfíncteres anais cessando completamente 90 dias após a cirurgia.

Update on the Pathophysiology and Management of Anorectal Disorders

Anorectal disorders are common and present with overlapping symptoms. They include several disorders with both structural and functional dysfunction(s). Because symptoms alone are poor predictors of the underlying pathophysiology, a diagnosis should only be made after evaluating symptoms and physiologic and structural abnormalities. A detailed history, a thorough physical and digital rectal examination and a systematic evaluation with high resolution and/or high definition three-dimensional (3D) anorectal manometry, 3D anal ultrasonography, magnetic resonance defecography and neurophysiology tests are essential to correctly identify these conditions. These physiological and imaging tests play a key role in facilitating a precise diagnosis and in providing a better understanding of the pathophysiology and functional anatomy. In turn, this leads to better and more comprehensive management using medical, behavioral and surgical approaches. For example, patients presenting with difficult defecation may demonstrate dyssynergic defecation and will benefit from biofeedback therapy before considering surgical treatment of coexisting anomalies such as rectoceles or intussusception. Similarly, patients with significant rectal prolapse and pelvic floor dysfunction or patients with complex enteroceles and pelvic organ prolapse may benefit from combined behavioral and surgical approaches, including an open, laparoscopic, transabdominal or transanal, and/or robotic-assisted surgery. Here, we provide an update on the pathophysiology, diagnosis, and management of selected common anorectal disorders.

Manometric analysis of the influence of rectal content on anal pressures in chronically constipated patients / Análise manométrica da influência do conteúdo retal nas pressões anais em pacientes cronicamente constipados

OBJECTIVE: The aim of our study was to analyze whether the presence of content in the rectum influences the anorectal manometry examination results in chronically constipated patients. METHODS: We evaluated 38 chronically constipated patients, 36 women and 2 men, with an average age of 53.55 years of age, all with a score above 10 on the Agachan Constipation Scoring System. All the patients underwent rectal preparation and then had the anorectal manometry examination without rectal content and after 5 min had it with a rectal balloon inflated with 200 ml of air in the rectum. STATISTICAL ANALYSIS: The statistical parametric paired-t test was applied in order to verify the difference in response between the groups after an intervention, adopting a significant level of 5% (p < 0.05). RESULTS: The anal pressure was analyzed from the standard anal manometry examination and we found a statistically significant influence on the manometric results for the patients' average resting pressures, absolute average contractions, average contractions, evacuations, and sustained contractions in the functional anal canals. CONCLUSION: The presence of rectal content influences the manometric values of average resting pressure, average absolute contraction, average contraction, evacuation, and average sustained contractions in the functional anal canal in the group of chronically constipated patients. (AU)

OBJETIVO: O objetivo deste estudo foi analisar se a presença de conteúdo no reto influencia os resultados do exame de manometria anorretal em pacientes cronicamente constipados. MÉTODOS: Foram avaliados 38 pacientes cronicamente constipados, 36 mulheres e dois homens, com média de 53,55 anos de idade, todos com pontuação acima de 10 no Agachan Constipation Scoring System. Todos os pacientes foram submetidos a preparo retal e, em seguida, passaram por um exame de manometria anorretal sem conteúdo retal e, depois de transcorridos cinco minutos, um novo exame foi realizado, agora com um balão retal inflado com 200 ml de ar no reto. ANÁLISE ESTATÍSTICA: Na análise estatística, foi aplicado o teste t paramétrico, com a finalidade de verificar a diferença, em termos de resposta, entre os grupos após uma intervenção. Para tanto, foi adotado um nível de significância de 5% (P < 0,05). RESULTADOS: A pressão anal foi analisada com base no exame de manometria anal de rotina; em nossos pacientes, foi observada influência estatisticamente significativa nos resultados manométricos para as pressões médias em repouso, contrações médias absolutas, contrações médias, evacuações e contrações sustentadas nos canais anais funcionais. CONCLUSÃO: A presença de conteúdo retal influencia os valores manométricos da pressão média em repouso, contração absoluta média, contração média, evacuação, e contrações sustentadas médias no canal anal funcional no grupo de pacientes cronicamente constipados. (AU)

The value of endorectal elastography in the diagnosis of malignant rectal adenoma / 中华医学超声杂志（电子版）

Objective To assess the value of endorectal elastography in the diagnosis of malignant rectal adenoma. Methods Sixty patients referred to the department of basic surgery of Peking Union Medical College Hospital for the evaluation of rectal adenoma from January 2011 to May 2013 were included in this prospective cohort. All patients underwent elasticity score (ES) and strain ratio(SR) examine before operation. To evaluate the reproducibility of the strain-ratio measurements, the intraclass correlation coefficient (ICC) was calculated. Compared with final operational pathological results,the diagnostic values of elasticity score and strain ratio method were assessed. Results Histopathological result showed there were 20 adenomas and 40 adenocarcinomas. The sensitivity, specificity, accuracy, positive predictive value and negative predictive value of ERUS was 68%(27/40), 40%(8/20), 58%(35/60), 69%(27/39), 38%(8/21), respectively. The sensitivity, specificity, accuracy, positive predictive value and negative predictive value of elasticity score was 85%(34/40), 70%(14/20), 80%(48/60), 85%(34/40), 70%(14/20), respectively. The SR of adenocarcinomas was significantly higher than that of adenomas(2.82±1.81 vs 1.23±0.57, t=3.333, P < 0.05). The differences among the SR of benign adenoma, benign adenoma with severe atypical hyperplasia and completely malignant lesions were statistically significant (1.26±0.84 vs 2.94±1.95, 1.42±0.55 vs 2.94±1.95, t=2.619, 2.415, P=0.013, 0.021). When 1.240 was chosen as the best cut-off value of SR, the sensitivity, specificity, accuracy, positive predictive value and negative predictive value of strain ratio was 82%(33/40), 75%(15/20), 80%(48/60), 87%(33/38), 68%(15/22), respectively. Conclusion Endorectal elasotgraphy can accurately diagnose the malignant rectal adenoma, which can provide reliable preoperative imaging evidence for clinical operation mode.

Clinical significance of preoperative colonoscopy for benign anal diseases / 中华消化外科杂志

Objective To investigate the clinical significance of preoperative colonoscopy for patients with benign anal diseases,and to compare the success rates of examination done by sedated colonoscopy and conventional colonoscopy.Methods The clinical data of 333 patients with benign anal disease who received preoperative colonoscopy at the Six Affiliated Hospital of Sun Yat-Sen University from April 2010 to March 2011 were retrospectively analyzed.All the patients were divided into the lesion group (120 patients) and normal group (213 patients)according to the results of colonoscopy.The measurement data and count data were analyzed using the t test and chi-square test,respectively.Results The age of patients in the lesion group was (48 ± 14) years,which was significantly older than (42 ± 14) years (t =3.75,P ＜ 0.05).The constituent ratio of patients older than 40 years in the lesion group was 72.50％ (87/120),which was significantly higher than 39.44％ (84/213) in the normal group (x2=33.59,P ＜0.05).The proportions of male and female patients were 71.67％ (86/120) and 28.33％ (34/120) in the lesion group,and 62.44％ (133/213) and 37.56％ (80/213) in the normal group,with no significant difference between the 2 groups (x2 =2.90,P ＞ 0.05).The benign anal diseases in the lesion group included polyp (80 cases),enteritis (30 cases),malignant tumor (7 cases),infflammatory bowel disease (7 cases),diverticulum (5 cases) and ulcer (1 case).The application rates of sedated colonoscopy in the lesion group and the normal goup were 51.67％ (62/120) and 54.93％ (117/213),respectively,with no significant difference between the 2 groups (x2=0.33,P ＞0.05).The success rate of terminal ileum intubation was 99.44％ (178/179) in patients who received sedated colonoscopy,which was significantly higher than 95.45％ (147/154) of patients who received conventional colonoscopy (x2 =5.61,P ＜ 0.05).Conclusion Patients with benign anal disease might complicated with colorectal lesions,and sedated colonoscopy is recommended for preoperative diagnosis,especially for patients who are older than 40 years.

Study of HPV infection in common anus and rectal disease / 国际检验医学杂志

Objective To study the human papilloma virus(HPV) infection in lesion tissues of patients with common anus and rectal disease .Methods Gene amplification combined with gene chip technology were employed to conduct genotyping test in lesion tissue of 566 patients with common anus and rectal disease .Results In lesion tissues of 566 patients with common anus and rectal disease ,the overall HPV infection rate was 32 .86% (186/566) .In male patients ,the overall HPV infection rate ,monopole infection rate and multiple infection rate were 32 .14% (117/364) ,23 .35% (85/364) and 8 .79% (32/364) ,respectively ,which showed no sta-tistically significant difference with female [34 .16% (69/202) ,24 .75% (50/202) and 9 .41% (19/202) ,respectively ] (P>0 .05) . HPV 18 ,16 ,33 ,31 types were the main types of common anus and rectal disease .Conclusion HPV genotyping test of anus and rectum tissues is important for molecular epidemiological studies of HPV infection in anus and rectum .

Clinical application of transumbilical single-port laparoscopic colorectal operation / 中华消化外科杂志

Objective To investigate the clinical value of transumbilical single-port laparoscopic colorectal operation.Methods The clinical data of 25 patients with benign or malignant carcinoma at the upper part of the colon or rectum who were admitted to the No.4 People's Hospital of Zigong from January 2010 to December 2012 were retrospectively analyzed,and the clinical experience of transumbilical single-port laparoscopic colorectal operation was summarized.Surgical procedure was selected according to the position and nature of the lesion.Patients were followed up via out-patient examination and phone call till March 2013.Results Partial colorectal resection was done on 14 patients,radical resection of right colon on 1 patient,radical resection of transverse colon on 1 patient,radical resection of left colon on 1 patient,radical resection of sigmoid colon on 2 patients and radical rectectomy on 6 patients.The operation was successfully carried out on 22 patients,2 patients received four-port laparoscopic colorectal operation,and 1 patient was converted to open surgery.The median length of the incision of single-port laparoscopic colorectal operation was 3.8 cm (range,3.5-4.5 cm),and the operation time was (192 ± 32) minutes.The intraoperative blood loss was (61 ± 21)mL,and the median diameter of the tumor was 2.7 cm (range,1.0-5.0 cm).The median number of lymph nodes dissected was 7 (range,3-22),the mean time of postoperative anal exhaust time was 2 days (range,1-5 days),and the mean time of postoperative hospital stay was 8 days (range,6-20 days).The incidence of postoperative complications was 8.0％ (2/25),including 1 patient with wound infection and 1 patient with anastomotic leakage.The circumferential resection margins of radically resected specimens were negative in 11 patients.Twenty-two patients who received transumbilical single-port laparoscopic colorectal resection were followed up,and the median time of follow-up was 12 months.Colorectal liver metastasis was detected on 1 patient at postoperative month 10,and the other patients survived without tumor recurrence or metastases.Conclusions Transumbilical singleport laparoscopic colorectal operation is safe,micro-traumatic and feasible,and it also has less complication and good cosmetic effect.

Expressão de mediadores neurotróficos e pró-inflamatórios na endometriose de reto e sigmoide / Expression of neurotrophic and inflammatory mediators in rectosigmoid endometriosis

OBJETIVO: Avaliar a expressão de mediadores neurotróficos (NGF, NPY E VIP) e pró-inflamatórios (TNF-α) em fragmentos de reto e sigmoide comprometidos por endometriose. MÉTODOS: Foram selecionadas 24 pacientes submetidas ao tratamento cirúrgico de endometriose de reto e sigmoide com técnica de ressecção segmentar, seguido de anastomose mecânica término-terminal, com grampeador circular, no período de janeiro de 2005 a dezembro de 2007. Neste estudo incluímos mulheres no menacme que se submeteram a tratamento cirúrgico por endometriose profunda infiltrativa com acometimento do reto e sigmoide, atingindo o nível da camada muscular, submucosa ou mucosa. Para o grupo de estudo foram utilizados 24 fragmentos de reto e sigmoide com endometriose confirmada histologicamente, sendo um fragmento de cada uma das 24 pacientes selecionadas. Para o grupo controle, utilizou-se um fragmento da margem distal da ressecção, denominado anel de anastomose, de cada uma das 24 pacientes selecionadas e incluídas no estudo. As amostras foram agrupadas em blocos de Tissue Micro Array (TMA) e submetidas à reação imunoistoquímica para avaliar a expressão do fator de necrose tumoral alfa (TNF-α), do fator de crescimento neural (NGF), do neuropeptídeo Y (NPY) e do peptídeo intestinal vasoativo P (VIP), e posterior análise semiquantitativa da imunomarcação por meio da leitura da densidade ótica relativa (DO). RESULTADOS: Observou-se maior densidade ótica relativa da imunomarcação para TNF-α e NGF no grupo de estudo (amostras com endometriose intestinal), DO= 0,01, respectivamente, para as duas proteínas (p<0,05), em relação aos controles sem endometriose. Não houve diferença estatística na densidade ótica da imunomarcação do NPY e VIP. CONCLUSÃO: Identificou-se o aumento da imunomarcação dos anticorpos TNF-α e NGF em fragmentos de reto e sigmoide comprometidos por endometriose em relação aos controles livres da doença. Não identificamos diferença estatística na imunomarcação das proteínas NPY e VIP.

PURPOSE: To evaluate the expression of neurotrophic (NGF, NPY and VIP) and pro-inflammatory (TNF-α) mediators in the rectum and sigmoid fragments compromised by endometriosis. METHODS: Twenty-four patients were selected to undergo surgical treatment of endometriosis of the rectum and sigmoid colon with a segmental resection technique, followed by end-to-end anastomosis with a circular stapler from January 2005 to December 2007. The study included premenopausal women who underwent surgical treatment for deep endometriosis infiltrating the rectum with involvement of the rectum and sigmoid, reaching the level of the muscle layer, submucosa or mucosa. Twenty-four rectum and sigmoid fragments with histologically confirmed endometriosis, one from each of the 24 selected patients, were used for the study group. For the control group, we used a fragment of the distal resection margin called anastomosis ring from each of the 24 patients enrolled in the study. Samples were grouped into Tissue Micro Array (TMA) blocks and subjected to immunohistochemistry to evaluate the expression of tumor necrosis factor alpha (TNF-α), nerve growth factor (NGF), neuropeptide Y (NPY) and P vasoactive intestinal peptide (VIP), followed by semiquantitative analysis of immunostaining by reading the relative optical density (OD). RESULTS: There was higher optical density relative to TNF-α immunostaining and NGF in the study group (samples with intestinal endometriosis), DO=0.01, for the two proteins, respectively (p<0.05), compared to controls without endometriosis. There was no statistically significant difference in the optical density of immunostaining of NPY and VIP. CONCLUSION: We identified increased immunostaining of TNF-α antibodies and fragments of NGF in the rectum and sigmoid compromised by endometriosis compared to disease-free controls. We did not identify any statistical difference in immunostaining of NPY and VIP proteins.