Comparative study of laparoscopic Keyhole and Sugarbaker technique in the treatment of terminal paracolostomy hernia / 中华外科杂志

Objective: To compare laparoscopic Keyhole repair with Sugarbaker repair in consecutive patients with parastomal hernia. Methods: From January 2015 to December 2021, 117 patients with parastomal hernia were treated with Keyhole or Sugarbaker laparoscopy repairs in the Department of Hernia and Bariatrci Surgery, the First Affiliated Hospital of University of Science and Technology of China, and the clinical data were retrospectively analyzed. There were 45 males and 72 females, aged (68.6±8.6) years (range: 44 to 84 years). Laparoscopic Sugarbaker repair was performed in 89 cases, and Keyhole repair was performed in 28 cases. The t-test, Mann-Whitney U test, χ2 test and Fisher exact test were used to compare the observation indicators between the two groups, such as operation time, incidence of operation-related complications, and postoperative recurrence rate. Results: The follow-up period was (M(IQR)) 33 (36) months (range: 12 to 84 months). Compared to the Sugarbaker group, the hernia ring area of the Keyhole group was bigger (35 (26) cm2 vs. 25 (16) cm2, Z=1.974, P=0.048), length of stay was longer ((22.0±8.0) d vs. (14.1±6.2) d, t=5.485, P<0.01), and the postoperative rate of recurrence was higher (28.6% (8/28) vs. 6.7% (6/89), χ2=7.675, P=0.006). There was no difference in operation time and postoperative complications between the two groups. Conclusions: Laparoscopic Sugarbaker repair is superior to Keyhole repair in the recurrence rate of parastomal hernia treated with compsite mesh (not funnel-shaped mesh). There are no differences in operation time and postoperative complications between the two groups.

A preliminary report of laparoscopic extraperitoneal colostomy anterior to posterior sheath of rectus abdominis-transversus abdominis to prevent parastomal hernia / 中华外科杂志

Objective: To examine the preliminary effect of laparoscopic extraperitoneal colostomy anterior to posterior sheath of rectus abdominis-transversus abdominis for the prevention of parastomal hernia after abdominoperineal resection for rectal cancer. Methods: This study is a prospective case series study. From June 2021 to June 2022, patients with low rectal cancer underwent laparoscopic abdominoperineal resection combined with extraperitoneal colostomy anterior to posterior sheath of rectus abdominis-transversus abdominis at the First Department of General Surgery, Shaanxi Provincial People's Hospital were enrolled. The clinical data and postoperative CT images of patients were collected to analyze the incidence of surgical complication and parastomal hernia. Results: Totally 6 cases of patient were enrolled, including 3 males and 3 females, aging 72.5 (19.5) years (M(IQR)) (range: 55 to 79 years). The operation time was 250 (48) minutes (range: 190 to 275 minutes), the stoma operation time was 27.5 (10.7) minutes (range: 21 to 37 minutes), the bleeding volume was 30 (35) ml (range: 15 to 80 ml). All patients were cured and discharged without surgery-related complications. The follow-up time was 136 (105) days (range: 98 to 279 days). After physical examination and abdominal CT follow-up, no parastomal hernia occurred in the 6 patients up to this article. Conclusions: A method of laparoscopic extraperitoneal colostomy anterior to posterior sheath of rectus abdominis-transversus abdominis is established. Permanent stoma can be completed with this method safely. It may have a preventive effect on the occurrence of parastomal hernia, which is worthy of further study.

Clinical value of mesh prophylaxis for parastomal hernia based on evidence-based medicine / 中华外科杂志

The incidence of parastomal hernia is substantially high, significantly affecting the quality of life of patients with stoma. How to effectively solve the problem of parastomal hernia is a long-term focus of hernia and abdominal wall surgery and colorectal surgery. The European Hernia Society guidelines on prevention and treatment of parastomal hernia published in 2018 has recommended the use of a prophylactic mesh to prevent parastomal hernia for the first time. In the following 5 years, more randomized controlled trials of multi-center, large-sample, double-blind, long-term follow-up have been published, and no significant effect of mesh prophylaxis has been observed on the incidence of parastomal hernia. However, whether mesh could decrease surgical intervention by limiting the symptoms of parastomal hernias would become a potential value of prophylaxis, which requires further research to elucidate.

¿Supuración crónica o pseudoquiste infectado? Una complicación de la eventroplastia con malla / Chronic suppuration or infected pseudocyst? A complication of incisional hernia repair with mesh

RESUMEN Las infecciones crónicas posteriores a reparaciones de la pared abdominal pueden presentarse como colecciones que involucran a la malla y suelen obligar a su extracción, mientras que los pseudoquistes son colecciones estériles con una gruesa pared fibrótica que debe ser extirpada para lograr la curación. Presentamos una paciente de 75 años con antecedente de eventroplastia, que consultó por un tumor abdominal de 6 meses de evolución, con características imagenológicas de pseudoquiste parietal. Durante la operación se encontró una malla preperitoneal no integrada a los tejidos y rodeada de "biofilm" y líquido turbio. La prótesis se retiró fácilmente y la aponeurosis, muy engrosada, se cerró borde a borde. El posoperatorio transcurrió sin incidentes y el cultivo desarrolló estafilococo aureus sensible a trimetoprima-sufametoxazol. Seis meses después, la evolución fue favorable y sin signos de recidiva.

ABSTRACT Chronic infections after abdominal wall repairs may present as collections involving the mesh which usually require removing the mesh, while pseudocysts are sterile collections with a thick fibrotic wall that must be removed to achieve healing. We report the case of a 75-year-old female patient with a history incisional hernia repair who sought medical advice due to an abdominal tumor which appeared 6 months before consultation with imaging tests suggestive of an abdominal wall pseudocyst. Surgery revealed a preperitoneal mesh without tissue integration surrounded by biofilm and cloudy fluid. The mesh was easily removed and the edges of the thick aponeurosis were sutured. The postoperative period evolved uneventful and the fluid culture was positive for staphylococcus aureus sensitive to trimethoprim-sufamethoxazole. Six months later the patient evolved with favorable outcome without recurrence.

Chinese expert consensus on the diagnosis and surgical treatment of rectal prolapse (2022 edition) / 中华胃肠外科杂志

Surgery is currently the only cure for rectal prolapse. Standardized preoperative evaluation and appropriate selection of surgical methods are crucial to the outcome of rectal prolapse surgery. With the development of a series of clinical studies in China and abroad, transabdominal surgery (such as ventral mesh fixation) and transperineal (anal) surgery (such as Altemeier surgery) have been widely recognized. Precise preoperative assessment of rectal prolapse and appropriate selection of surgical approaches has important clinical value in reducing postoperative recurrence rates and surgical-related complications. However, the current rectal prolapse assessment system needs to be improved, and the choice of surgical procedures remains controversal. To guide the diagnosis and surgical treatment of patients with rectal prolapse in China, nationwide specialists of colorectal and pelvic floor surgery have been organized by the of Chinese Medical Doctor Association Anorectal Branch, the Pelvic Floor Surgery Committee, and Clinical Guidelines Committee. Experts have conducted rounds of discussions on the core content of standardized diagnosis and surgical treatment for rectal prolapse, and jointly formulated the "Chinese expert consensus on the diagnosis and surgical treatment of rectal prolapse (2022)". We hope that this consensus will provide useful resources for the colorectal and pelvic floor surgeons, and promote the standardization of diagnosis and surgical treatment for the rectal prolapse in China.

Conservative Management of Spondylodiscitis after Laparoscopic Sacral Colpopexy: A Case Report and Review of Literature / Manejo conservador da espondilodiscite após colpopexia sacral laparoscópica: Relato de caso e revisão da literatura

Abstract Sacral colpopexy is one of the standard procedures to treat apical pelvic organ prolapse. In most cases, a synthetic mesh is used to facilitate the colposuspension. Spondylodiscitis is a rare but potentially serious complication that must be promptly diagnosed and treated, despite the lack of consensus in the management of this complication.We report one case of spondylodiscitis after a laparoscopic supracervical hysterectomy and sacral colpopexy treated conservatively. We also present a literature review regarding this rare complication. A conservative approach without mesh removal may be possible in selected patients (stable, with no vaginal lesions, mesh exposure or severe neurologic compromise). Hemocultures and culture of imageguided biopsies should be performed to direct antibiotic therapy. Conservative versus surgical treatment should be regularly weighted depending on clinical and analytical progression. A multidisciplinary team is of paramount importance in the follow-up of these patients.

Resumo A colpopexia sacral é um dos procedimentos padrão para tratar o prolapso de órgãos pélvicos apical. Na maioria dos casos, uma tela sintética é usada para facilitar a colposuspensão. A espondilodiscite é uma complicação rara, mas potencialmente grave, que deve ser prontamente diagnosticada e tratada, apesar da falta de consenso no manejo dessa complicação. Relatamos um caso de espondilodiscite após histerectomia supracervical laparoscópica e colpopexia sacral tratada conservadoramente. Também apresentamos uma revisão da literatura sobre essa complicação rara. Uma abordagem conservadora sem remoção da tela pode ser possível em pacientes selecionadas (estáveis, sem lesões vaginais, exposição da tela ou comprometimento neurológico grave). Hemoculturas e cultura de biópsias guiadas por imagem devemser realizadas para direcionar a antibioticoterapia. O tratamento conservador versus o cirúrgico deve ser avaliado regularmente, dependendo da progressão clínica e analítica. Uma equipe multidisciplinar é de suma importância no acompanhamento desses pacientes.

Comportamiento biológico de mallas para la reparación de paredes abdominales. Resultados preliminares en un modelo animal / Biological behavior of meshes used for abdominal wall surgery. Preliminary results in an animal model

Resumen La falla en la reparación de los defectos de la pared abdominal se relaciona con una alteración en la integración del material protésico. El objetivo de este trabajo fue evaluar el comportamiento biológico de mallas utilizadas en cirugía de paredes abdominales en un modelo animal. Luego de la confección de un defecto parietal se colocó una malla intraperitoneal, utilizando 4 grupos de 10 ratas; 1) Prolene (polipropileno microporo de alto peso), 2) Ultrapro (polipropileno + poliglecaprone, macroporo de bajo peso), 3) Proceed (polipropileno + polidoxanona + celulosa oxidada regenerada, macroporo de peso intermedio), y 4) Physiomesh (polipropileno + poliglecaprone, macroporo de bajo peso). Se realizó análisis macroscópico y microscópico a los 30 días y los resultados fueron evaluados por dos observadores independientes. Al examen macroscópico, la integración de la prótesis fue > 75% en todos los grupos. El análisis microscópico mostró mayor inflamación global y número de células gigantes multinucleadas en Prolene (p < 0.01) y menor cantidad de células inflamatorias en la interface músculo-malla en Physiomesh < Ultrapro (p < 0.05). La organización de las fibras de colágeno fue similar para todas las mallas, aunque hubo mayor depósito de colágeno en los espacios inter-filamento para las mallas macroporosas (p < 0.01). Concluimos que las mallas de polipropileno microporo y alto peso producen mayor reacción inflamatoria y de cuerpo extraño. Por lo tanto, las mallas compuestas tendrían una mejor biocompatibilidad y serían mejor toleradas por el huésped.

Abstract An adequate integration of the prosthetic materials used to repair abdominal wall defects is necessary for satisfactory outcomes. We aimed to evaluate, in an animal model, the biological behavior of meshes used for abdominal wall surgery. Four groups of 10 rats were separated. After laparotomy, intraperitoneal prostheses were placed: 1) Prolene (polypropylene microporous, heavy-weight), 2) Ultrapro (polypropylene + poliglecaprone, macroporous low-weight), 3) Proceed (polypropylene + polidoxanone + regenerated oxidized cellulose, microporous medium-weight), 4) Physiomesh (polypropylene + poliglecaprone, macroporous lowweight). Macroscopic and microscopic analyses were performed at 30 days. The results were evaluated by two independent observers and expressed in means with standard deviation. For statistical analysis p < 0.05 was considered significant. On macroscopic examination, mesh integration was greater than 75% in all cases. Microscopic analysis showed greater global inflammation and more multinucleated giant cells in Prolene (p < 0.01). Less inflammatory cells were observed at the muscle-mesh interface in Physiomesh vs. Ultrapro (p < 0.05). Collagen fibers disposition was similar in all meshes, although, microporous meshes had higher collagen deposit in the interfilamentous spaces (p < 0.01). In conclusion, in our animal model, microporous and heavy-weight polypropylene meshes produce greater inflammatory and foreign body reaction. Thus, composite meshes would have greater biocompatibility and better tolerance by the host.

Effects of mesh surgery on sexual function in pelvic prolapse and urinary incontinence

ABSTRACT Purpose: We aimed to determine pre-operative and post-operative sexual function scores of patients who underwent four-arm polypropylene mesh implantation surgery to treat urinary incontinence and pelvic organ prolapse. Materials and Methods: A prospective study from January 2011 to November 2015 including patients (n: 72) submitted to surgical mesh implantation (four-arm anterior mesh implant (Betamix POP4®, Betatech Medical, Turkey) questioned the patients with Female Sexual Function Index evaluation form. The questionnaire was applied to all patients at pre-operative, post-operative 3rd month and post-operative 1st year periods. Results: The mean age of the patients was 47.2±7.1 years. The mean Body Mass Index (kg/m2) was 28.7±3.7. The average of incontinence duration (year) was 4.6±2.6 and the average for operation time (min) was 35.7±2.1. After the urinary incontinence and pelvic organ prolapse surgery, it was observed that incontinence complaints of patients reduced. Furthermore, there was a positive change in quality of life and sexual function of patients at the post-operative period. There was a statistically significant increase according to Female Sexual Function Index score among all three periods (16%, 86% and 100% respectively, p=0.001) and improvement of sexual functions was observed. Conclusions: Transvaginal mesh use in the surgical treatment of pelvic organ prolapse improves quality of life. However, risk factors such as transvaginal mesh usage indication, surgical technique and experience of the surgeon, suitability of the material, the current health status of the patient and postoperative personal care of the patient may affect the success of operations.

Simultaneous laparoscopic inguinal hernia repair and cholecystectomy: does it cause mesh infection? / Colecistectomia e herniorrafia inguinal laparoscópica simultâneas: causa infecção de tela?

ABSTRACT Background: Repair of inguinal hernia concomitant with cholecystectomy was rarely performed until more recently when laparoscopic herniorrhaphy gained more adepts. Although it is generally an attractive option for patients, simultaneous performance of both procedures has been questioned by the potential risk of complications related to mesh, mainly infection. Aim: To evaluate a series of patients who underwent simultaneous laparoscopic inguinal hernia repair and cholecystectomy, with emphasis on the risk of complications related to the mesh, especially infection. Methods: Fifty patients underwent simultaneous inguinal repair and cholecystectomy, both by laparoscopy, of which 46 met the inclusion criteria of this study. Results: In all, hernia repair was the first procedure performed. Forty-five (97,9%) were discharged within 24 h after surgery. Total mean cost of the two procedures performed separately ($2,562.45) was 43% higher than the mean cost of both operations done simultaneously ($1,785.11). Up to 30-day postoperative follow-up, seven (15.2%) presented minor complications. No patient required hospital re-admission, percutaneous drainage, antibiotic therapy or presented any other signs of mesh infection after three months. In long-term follow-up, mean of 47,1 months, 38 patients (82,6%) were revaluated. Three (7,8%) reported complications: hernia recurrence; chronic discomfort; reoperation due a non-reabsorbed seroma, one in each. However, none showed any mesh-related complication. Satisfaction questionnaire revealed that 36 (94,7%) were satisfied with the results of surgery. All of them stated that they would opt for simultaneous surgery again if necessary. Conclusion: Combined laparoscopic inguinal hernia repair and cholecystectomy is a safe procedure, with no increase in mesh infection. In addition, it has important advantage of reducing hospital costs and increase patient' satisfaction.

RESUMO Racional: Reparo da hérnia inguinal concomitante à colecistectomia era raramente realizado até mais recentemente, quando a herniorrafia laparoscópica ganhou mais adeptos. Embora geralmente seja opção atraente para pacientes, a realização simultânea tem sido questionada pelo risco potencial de complicações relacionadas à tela, principalmente infecção. Objetivo: Avaliar uma série de pacientes submetidos a colecistectomia e herniorrafia inguinal laparoscópica simultâneas, com ênfase no risco de complicações relacionadas a tela, em especial infecção. Métodos: Cinquenta pacientes foram submetidos a herniorrafia e colecistectomia simultâneas por videolaparoscopia, dos quais 46 atenderam aos critérios de inclusão. Resultados: Em todos, a herniorrafia foi realizada inicialmente. Quarenta e cinco (97,9%) tiveram alta em 24 h. O custo médio total dos dois procedimentos realizados separadamente ($2.562,45) foi 43% maior do que o custo médio das duas operações feitas simultaneamente ($1.785,11). Após 30 dias de acompanhamento pós-operatório, sete (15,2%) apresentaram complicações menores. Após três meses, nenhum necessitou de readmissão hospitalar, drenagem, antibioticoterapia ou sinal de infecção de tela. No seguimento em longo prazo, média de 47,1 meses, 38 (82,6%) foram reavaliados. Três (7,8%) relataram complicações: recorrência de hérnia; desconforto crônico; reoperação por seroma não reabsorvido. No entanto, nenhum apresentou qualquer complicação relacionada à tela. Questionário de satisfação revelou que 36 (94,7%) ficaram satisfeitos com o resultado da operação. Todos afirmaram que optariam pela ela simultânea novamente se necessário. Conclusão: O reparo da hérnia inguinal concomitante com colecistectomia por laparoscopia é procedimento seguro, sem aumento de infecção da tela. Além disso, tem a vantagem importante de reduzir custos hospitalares e aumentar a satisfação do paciente.

Histological evaluation of capsules formed by texturized silicone implants with and without polyester mesh coverage (Parietex®). A study on female rats

ABSTRACT Purpose To evaluate capsules formed by microtextured silicone implants with and without Parietex® mesh coverage histologically. Methods Sixty Wistar rats were divided in two groups (meshed and unmeshed). Each group was, then, divided into two subgroups for evaluation at 30 and 90 days. Capsules were analyzed based on hematoxylin and eosin (HE) and picrosirius staining. Results The number of fibroblasts, neutrophils and macrophages was similar among all subgroups. There was a higher lymphocyte reaction in the 30-day meshed group (p = 0.003). Giant cell reaction, granulation tissue and neoangiogenesis were similar among the subgroups. Synovial metaplasia was milder at 90-day in the unmeshed (p = 0.002) and meshed group (p < 0.001). Capsular thickness was significantly greater in the meshed samples (30-day p < 0.001 and 90-day p < 0.001). There was a similar amount of collagen types I and III in both groups. Conclusions The mesh-covered implants produced capsules similar to the microtextured ones when analyzing inflammatory variables. Synovial metaplasia was milder at 90 than at 30 days, and the capsular thickness was significantly greater in the meshed group. A similar amount of collagen types I and III was observed. Due to these characteristics, the mesh coverage did not seem to significantly affect the local inflammatory activity.

Analysis of tissue inflammatory response, fibroplasia, and foreign body reaction between the polyglactin suture of abdominal aponeurosis in rats and the intraperitoneal implant of polypropylene, polypropylene/polyglecaprone and polyester/porcine collagen meshes

ABSTRACT Purpose To compare tissue inflammatory response, foreign body reaction, fibroplasia, and proportion of type I/III collagen between closure of abdominal wall aponeurosis using polyglactin suture and intraperitoneal implant of polypropylene, polypropylene/polyglecaprone, and polyester/porcine collagen meshes to repair defects in the abdominal wall of rats. Methods Forty Wistar rats were placed in four groups, ten animals each, for the intraperitoneal implant of polypropylene, polypropylene/polyglecaprone, and polyester/porcine collagen meshes or suture with polyglactin (sham) after creation of defect in the abdominal wall. Twenty-one days later, histological analysis was performed after staining with hematoxylin-eosin and picrosirius red. Results The groups with meshes had a higher inflammation score (p < 0.05) and higher number of gigantocytes (p < 0.05) than the sham group, which had a better fibroplasia with a higher proportion of type I/III collagen than the tissue separating meshes (p < 0.05). There were no statistically significant differences between the three groups with meshes. Conclusions The intraperitoneal implant of polypropylene/polyglecaprone and polyester/porcine collagen meshes determined a more intense tissue inflammatory response with exuberant foreign body reaction, immature fibroplasia and low tissue proportion of type I/III collagen compared to suture with polyglactin of abdominal aponeurosis. However, there were no significant differences in relation to the polypropylene mesh group.

A 14-year multi-institutional collaborative study of Chinese pelvic floor surgical procedures related to pelvic organ prolapse / 中华医学杂志(英文版)

BACKGROUND@#It has been a global trend that increasing complications related to pelvic floor surgeries have been reported over time. The current study aimed to outline the development of Chinese pelvic floor surgeries related to pelvic organ prolapse (POP) over the past 14 years and investigate the potential influence of enhanced monitoring conducted by the Chinese Association of Urogynecology since 2011.@*METHODS@#A total of 44,594 women with POP who underwent pelvic floor surgeries between October 1, 2004 and September 30, 2018 were included from 22 tertiary academic medical centers. The data were reported voluntarily and obtained from a database. We compared the proportion of each procedure in the 7 years before and 7 years after September 30, 2011. The data were analyzed by performing Z test (one-sided).@*RESULTS@#The number of different procedures during October 1, 2011-September 30, 2018 was more than twice that during October 1, 2004-September 30, 2011. Regarding pelvic floor surgeries related to POP, the rate of synthetic mesh procedures increased from 38.1% (5298/13,906) during October 1, 2004-September 30, 2011 to 46.0% (14,107/30,688) during October 1, 2011-September 30, 2018, whereas the rate of non-mesh procedures decreased from 61.9% (8608/13,906) to 54.0% (16,581/30,688) (Z = 15.53, P < 0.001). Regarding synthetic mesh surgeries related to POP, the rates of transvaginal placement of surgical mesh (TVM) procedures decreased from 94.1% (4983/5298) to 82.2% (11,603/14,107) (Z = 20.79, P < 0.001), but the rate of laparoscopic sacrocolpopexy (LSC) procedures increased from 5.9% (315/5298) to 17.8% (2504/14,107).@*CONCLUSIONS@#The rate of synthetic mesh procedures increased while that of non-mesh procedures decreased significantly. The rate of TVM procedures decreased while the rate of LSC procedures increased significantly.@*TRIAL REGISTRATION NUMBER@#NCT03620565, https://register.clinicaltrials.gov.

Value of Transperineal Ultrasound in Short-term Evaluation of Pelvic Organ Prolapse after Transvaginal Mesh Implantation / 中国医学科学院学报

Objective To observe the patients after transvaginal mesh(TVM)implantation surgery by using transperineal ultrasound(TPUS),compare the diagnosis of pelvic organ prolapse(POP)by TPUS and clinical examination[according to the Pelvic Organ Prolapse Quantification(POP-Q)system published by the International Continence Society],and to explore the role of ultrasound in postoperative evaluation as well as the high-risk factors of post-surgery POP recurrence. Methods This is a retrospective study based on the POP-Q records and TPUS data sets of patients within 6 months after TVM surgery during September 2013 and November 2019.The diagnostic results of TPUS and POP-Q were compared.The incidences of hiatal ballooning and levator avulsion were separately compared between the TPUS group and the control group. Results A total of 147 patients were enrolled.The Kappa values between TPUS and POP-Q in the diagnosis of anterior and posterior compartment POP were 0.268(

Abordaje multidisciplinario del dolor inguinal crónico luego de hernioplastia inguinal / Multidisciplinary approach to chronic postoperative inguinal pain

RESUMEN Antecedentes: el dolor inguinal crónico posoperatorio representa una complicación que altera la ca lidad de vida después de la hernioplastia inguinal. Su incidencia es variable con informes de hasta el 16%. Objetivo: describir el tratamiento y los resultados en pacientes con dolor inguinal crónico luego de una hernioplastia inguinal con malla. Material y métodos: estudio descriptivo, observacional y retrospectivo. Se definió como dolor ingui nal crónico posoperatorio la presencia de dolor inguinal por daño nervioso o afectación del sistema somatosensorial tisular que persiste por más de 6 meses luego de la cirugía inicial. Se revisaron las historias clínicas de los pacientes que cursaban el posoperatorio de hernioplastia inguinal convencio nal y laparoscópica en el período 2010-2018. Se realizó la encuesta EuraHS Quality of life score antes y después del abordaje terapéutico multidisciplinario para evaluar cambios en el dolor y restricción de la actividad física. Los resultados fueron analizados y comparados. Resultados: se identificaron 8 pacientes con dolor inguinal crónico posoperatorio grave. El 100% fue evaluado por el Servicio de tratamiento del dolor y requirieron 3 o más fármacos para manejo del do lor. Posteriormente requirieron bloqueo guiado por tomografía computarizada a causa de la persisten cia de los síntomas. Se realizaron 3 (50%) exploraciones quirúrgicas con retiro de material protésico y 2 triples neurectomías. Se observó una disminución estadísticamente significativa (p < 0,05) en el dolor en reposo, dolor durante la actividad y dolor que experimentaron en la última semana. Conclusión: el abordaje multidisciplinario y escalonado permitiría seleccionar a los pacientes que se beneficiarán con el tratamiento quirúrgico.

ABSTRACT Background: Chronic postoperative inguinal pain represents a complication that alters the quality of life after inguinal hernioplasty. Its incidence is variable with reports of up to 16%. Objective: To describe the treatment and results in patients with chronic inguinal pain after an inguinal hernioplasty with mesh. Material and methods: Descriptive, observational and retrospective study. The postoperative chronic inguinal pain was defined as the presence of inguinal pain due to nerve damage or involvement of the somatosensory tissue system that persists for more than 6 months after the initial surgery. The medical records of patients in the postoperative period of conventional and laparoscopic inguinal hernioplasty in the period 2010-2018 were reviewed. The EuraHS Quality of life score pre and post multidisciplinary therapeutic approach was used to evaluate changes in pain and restriction of physical activity. The results were analyzed and compared. Results: 8 patients with severe chronic postoperative inguinal pain were identified. 100% were eva luated by the pain management service and required 3 or more drugs for pain management. Sub sequently, they required block guided by computed tomography due to persistence of symptoms. 3 (50%) surgical examinations were performed with removal of prosthetic material and 2 triple neurec tomies. A statistically significant decrease (p <0.05) was observed in pain at rest, pain during activity and pain experienced in the last week. Conclusion: The multidisciplinary and step up approach would allow selecting the patients who will benefit from the surgical treatment.

Migración de malla: una complicación temible / Mesh migration: a fearsome complication

RESUMEN La migración de malla en el posoperatorio alejado de la eventroplastìa y su consecuente infección es una complicación poco frecuente y peligrosa. La malla migrada genera reacción inflamatoria de tipo cuerpo extraño. Puede causar obstrucción intestinal, perforación intestinal o dolor abdominal cróni co. Solo se informan 4 casos en la literatura mundial de migración y uno con compromiso intestinal. Presentamos el caso de un tumor inflamatorio adherido a la pared abdominal, con contenido de poli propileno. El objetivo de esta carta científica es presentar una complicación poco habitual, destacando los aspectos más importantes de su manejo, definiendo algunas recomendaciones y remarcando la importancia del abordaje multidisciplinario.

ABSTRACT Mesh migration with subsequent infection years after incisional hernia repair is an uncommon and dangerous complication. Mesh migration produces an inflammatory foreign body reaction and can cause bowel obstruction, bowel perforation or chronic abdominal pain. Only four cases have been reported in the international literature, one of them with bowel involvement. We report a case of an inflammatory tumor containing polypropylene traces adhered to the abdominal wall. The aim of this scientific letter is to report a rare complication, emphasizing the most relevant aspects about its ma nagement, recommendations, and the relevance of a multidisciplinary approach.

Hiatal hernia repair: prevention of mesh erosion and migration into the esophagogastric junction / Correção de hérnia hiatal: prevenção de erosão e migração de tela na junção esofagogástrica

ABSTRACT Background: Erosion and migration into the esophagogastric lumen after laparoscopic hiatal hernia repair with mesh placement has been published. Aim: To present surgical maneuvers that seek to diminish the risk of this complication. Method: We suggest mobilizing the hernia sac from the mediastinum and taking it down to the abdominal position with its blood supply intact in order to rotate it behind and around the abdominal esophagus. The purpose is to cover the on-lay mesh placed in "U" fashion to reinforce the crus suture. Results: We have performed laparoscopic hiatal hernia repair in 173 patients (total group). Early postoperative complications were observed in 35 patients (27.1%) and one patient died (0.7%) due to a massive lung thromboembolism. One hundred twenty-nine patients were followed-up for a mean of 41+28months. Mesh placement was performed in 79 of these patients. The remnant sac was rotated behind the esophagus in order to cover the mesh surface. In this group, late complications were observed in five patients (2.9%). We have not observed mesh erosion or migration to the esophagogastric lumen. Conclusion: The proposed technique should be useful for preventing erosion and migration into the esophagus.

RESUMO Racional: Com a colocação de tela foi têm sido publicadas erosões e migrações para o lúmen esofagogástrico após correção de hérnia hiatal laparoscópica. Objetivo: Apresentar manobras cirúrgicas que buscam diminuir o risco dessa complicação. Método: Sugerimos mobilizar o saco de hérnia do mediastino e levá-lo à posição abdominal com o suprimento sanguíneo intacto, a fim de girá-lo para trás e ao redor do esôfago abdominal. O objetivo é cobrir a malha colocada sobre a forma "U" para reforçar a sutura da crura haital. Resultados: Realizamos reparo laparoscópico de hérnia hiatal em 173 pacientes (grupo total). Complicações pós-operatórias precoces foram observadas em 35 pacientes (27,1%) e um morreu (0,7%) devido a tromboembolismo pulmonar maciço. Cento e vinte e nove pacientes foram acompanhados por média de 41+28 meses. A colocação da tela foi realizada em 79 desses pacientes. O saco remanescente foi girado atrás do esôfago para cobrir a superfície da tela. Nesse grupo, complicações tardias foram observadas em cinco pacientes (2,9%). Não observamos erosão da tela ou migração dela para o lúmen esofagogástrico. Conclusão: A técnica proposta pode ser útil para prevenir a erosão e a migração para o esôfago de telas na correção de hérnias hiatais.

Experimental evaluation of intra-abdominal adhesions comparing two different intraperitoneal meshes and the effect of a natural anti-inflammatory product on their formation

Abstract Purpose: In laparoscopic incisional hernia repair, meshes with a tissue-separating barrier are positioned intraperitoneally. Despite this property, the close contact between mesh and viscera involves a risk of adhesion formation. Some natural products, such as red propolis (RP), could reduce these adhesions owing to their anti-inflammatory properties. This study aimed to compare two different intraperitoneal meshes with respect to their characteristics of adhesion formation, histological findings and evaluate the role of RP in the development of these adhesions. Methods: 40 Wistar rats received placement of two different meshes (Symbotex and Dynamesh IPOM) on peritoneum. The animals were divided into two groups: control group (mesh) and treatment group (mesh and RP). After 7 and 14 days, 20 animals of each group underwent midline laparotomy to determine the adhesions and histological characteristics. Results: Out of the 40 animals, there were two deaths in the test group and two in the control group. All animals in both groups developed adherence to the mesh. At postoperative day (POD) 7, two Symbotex meshes presented firm adhesions and at POD 14, two Dynamesh meshes had firm adhesions as well. The comparison between the meshes under the effect of RP in relation to the control group showed no statistical difference. Conclusions: Both meshes showed intraperitoneal adhesions in all evaluated samples with similar results on the characteristics of adhesions. RP showed no effect on the incidence or gradation of intraperitoneal adhesions with the mesh.

Long-term outcome (5-10 years) after non absorbable mesh insertion compared to partially absorbable mesh insertion for anterior vaginal wall prolapse repair

ABSTRACT Objective: To evaluate long-term (5-10 years) outcomes of Minimally Invasive Surgical (MIS) kit insertion with Prolift® (non-absorbable) mesh compared to the use of Prolift M® (partially absorbable), for anterior vaginal wall prolapse repair. Study design: In this retrospective study we compared women undergoing MIS kit Prolift® insertion (n=90) vs. Prolift M® insertion (n=79) for anterior vaginal wall prolapse repair between 2006 and 2012 at our Institution. A number of 169 women fulfilled the inclusion criteria and were included in the study. Results: During the study period 128 women (76%) completed full follow-up; of them 58 (73%) following MIS kit Prolift® insertion, and 70 (88%) following MIS kit ProliftM® insertion. There was no significant difference between the Prolift® and Prolift M® regarding parity (3.04 vs. 2.88, p=0.506), presence of hypertension (24.1% vs. 39.1%, p=0.088), diabetes mellitus (3.4% vs. 11.6%, p=0.109), or urinary stress incontinence (39.7% vs. 47.1%, p=0.475). All participants had been diagnosed with POP grade 3 or 4 before the procedure. No significant complications during the procedure or postoperative period were identified in the study groups. The follow-up period was at least five years in duration for both groups. Both groups were comparable according to questionnaires focused on function and satisfaction. Conclusion: Patients undergoing MIS kit Prolift® and Prolift M® insertion for anterior vaginal wall prolapse repair had comparable early and late postoperative outcomes. No differences in patient's function and satisfaction between the two groups were identified. According to our findings, there is no superiority to either of the two studied mesh devices.

Comparative study of four different types of intraperitoneal mesh prostheses in rats

Abstract Purpose: To compare four types of mesh regarding visceral adhesions, inflammatory response and incorporation. Methods: Sixty Wistar rats were divided into four groups, with different meshes implanted intraperitoneally: polytetrafluoroethylene (ePTFE group); polypropylene with polydioxanone and oxidized cellulose (PCD); polypropylene (PM) and polypropylene with silicone (PMS). The variables analyzed were: area covered by adhesions, incorporation of the mesh and inflammatory reaction (evaluated histologically and by COX2 immunochemistry). Results: The PMS group had the lowest adhesion area (63.1%) and grade 1 adhesions. The ePTFE and PM groups presented almost the total area of their surface covered by adherences (99.8% and 97.7% respectively) The group ePTFE had the highest percentage of area without incorporation (42%; p <0.001) with no difference between the other meshes. The PMS group had the best incorporation rate. And the histological analysis revealed that the inflammation scores were significantly different. Conclusions: The PM mesh had higher density of adherences, larger area of adherences, adherences to organs and percentage of incorporation. ePTFE had the higher area of adherences and lower incorporation. The PMS mesh performed best in the inflammation score, had a higher incorporation and lower area of adherences, and it was considered the best type of mesh.

Comparative study of peritoneal adhesions after intraperitoneal implantation in rats of meshes of polypropylene versus polypropylene/polyglecaprone versus polyester/porcine collagen

Abstract Purpose To Compare the extent and intensity of adhesions formed between the intra-abdominal organs and the intraperitoneal implants of polypropylene mesh versus polypropylene/polyglecaprone versus polyester/porcine collagen used for correction of abdominal wall defect in rats. Methods After the defect in the abdominal wall, thirty Wistar rats were placed in three groups (ten animals each) for intraperitoneal mesh implant: polypropylene group, polypropylene/polyglecaprone group, and polyester/porcine collagen group. The macroscopic evaluation of the extent and intensity of adhesions was performed 21 days after the implant. Results The polypropylene group had a higher statistically significant impairment due to visceral adhesions (p value = 0.002) and a higher degree of intense adherence in relation to polypropylene/polyglecaprone and polyester/porcine collagen groups (p value<0.001). The polyester/porcine collagen group showed more intense adhesions than the polypropylene/polyglecaprone group (p value=0.035). Conclusions The intraperitoneal implantation of polypropylene meshes to correct defects of the abdominal wall caused the appearance of extensive and firm adhesions to intra-abdominal structures. The use of polypropylene/polyglecaprone or polyester/porcine collagen tissue-separating meshes reduces the number and degree of adhesions formed.