Annular pancreas as a cause of neonatal duodenal obstruction, a case report.

The annular pancreas (AP) is an uncommon congenital anomaly, characterised by a circumferential envelope in the second portion of the duodenum. In recent years, some genetic component has been found in the etiology. A newborn full-term male, weighing at 1910 g at birth, had a history of intrauterine growth restriction and diagnosis of tetralogy of Fallot, Down syndrome and congenital hypothyroidism. Duodenal membrane is suspected after persistent postprandial vomiting and abdominal distension; his abdomen was distended, hyperresonant and soft. The gastroduodenal series showed data compatible with a duodenal membrane so exploratory laparotomy was performed, finding the pancreas completely wrapping the second portion of the duodenum, so a diamond-shaped-duodenoduodenostomy anastomosis was performed. The AP should be considered, especially in male neonates with postprandial vomiting, abdominal distension, who show some other congenital anomaly, and in the abdominal X-ray, the sign of the double bubble is observed.

Trauma cervical penetrante: experiencia de un hospital de enseñanza en México / Penetrating cervical trauma: experience of a teaching hospital in Mexico

Introducción. El trauma cervical penetrante es una entidad poco frecuente, con tendencia al alza, de considerable morbimortalidad. Es fundamental conocer su manejo por cirujanos en entrenamiento, quienes en su mayoría son comúnmente los proveedores del tratamiento en las áreas de urgencias. El objetivo de este estudio fue demostrar la experiencia de un centro de trauma en México en el tratamiento de trauma cervical penetrante administrado por cirujanos en entrenamiento. Métodos. Estudio retrospectivo de pacientes con diagnóstico de trauma cervical penetrante sometidos a exploración cervical entre los años 2014 y 2019. Se identificaron 110 expedientes, se excluyeron 26 por falta de datos indispensables para la investigación y se analizaron los datos de 84 pacientes. Resultados. El 96,4 % de los pacientes fueron hombres, la mayoría entre 16 y 50 años (83,3 %) y la zona anatómica II fue la más comúnmente lesionada (65,4 %). Las etiologías más frecuentes fueron heridas por arma cortopunzante (67,9 %) y heridas por proyectil de arma de fuego (25 %). El 95 % de los procedimientos fueron realizados por residentes de cuarto y quinto año. La mediana de días de estancia hospitalaria fue de 2 días. La incidencia de complicaciones fue de 9,5 % y la mortalidad de 1,2 %. Conclusiones. Los cirujanos generales en etapa de formación entrenados en centros de trauma tienen la capacidad de tratar de forma óptima el trauma cervical penetrante sin modificación de las tasas de morbimortalidad descritas en la literatura internacional.

Introduction. Penetrating cervical trauma is a rare entity, with an upward trend, of considerable morbidity and mortality. It is essential to acknowledge its management by surgeons in training, who are usually the providers in the emergency areas. The objective of this study was to demonstrate the experience of a trauma center in Mexico in the treatment of penetrating cervical trauma by surgeons in training. Methods. This was a retrospective study of patients diagnosed with penetrating cervical trauma who underwent cervical examination between 2014 and 2019; 110 records were identified, 26 were excluded due to lack of essential data for the analysis, and the data of 84 patients were included. Results. 96.4% of the patients were men, the majority between 16 and 50 years old (83.3%) and the anatomic zone II was the most frequently injured (65.4%). The most common etiologies were stab wounds (67.9%) and gunshot wounds (25%). Ninety five percent of the procedures were performed by fourth- and fifth-year residents. The median number of days of hospital stay was 2 (2-4) days. The incidence of complications was 9.5% and mortality in 1.2%. Conclusions. General surgeons in the trauma training stage can optimally treat penetrating cervical trauma with the same morbidity and mortality rates described in the international literature.

Virus del papiloma humano en carcinoma colorrectal / Human papilloma virus in colorectal carcinoma

Resumen Introducción: Previos trabajos han reportado una asociación entre la infección del virus del papiloma humano (VPH) y el desarrollo de cáncer colorrectal, aunque existe controversia al respecto. Materiales y Método: Estudio observacional, transversal, descriptivo, retrospectivo, no ciego. Se utilizaron 50 muestras de patología con diagnóstico de adenocarcinoma colorrectal, incluidas en parafina, para aislar ADN de las muestras. Se realizó la extracción de ADN mediante protocolos establecidos para extracción, lisis y rehidratación de muestra. Se identificó y genotipicó el ADN del virus para amplificar y detectar subtipos oncogénicos de entre 35 subtipos diferentes incluidos en la prueba, secuenciando las muestras positivas, utilizando protocolos ya establecidos de purificación y análisis de muestra, mediante microarreglos. Resultados: Se identificaron 14 muestras de 50 (28%) estudiadas positivas para el virus de papiloma humano de las cuales 11 (22%) incluyen uno o más subtipos de alto riesgo para neoplasia. No se identificaron diferencias estadísticamente significativas entre grupos en cuanto a edad, sexo, localización del tumor, grado de diferenciación, infiltración, ganglios afectados, metástasis o número de paquetes/año. Conclusión: La detección de los subtipos de VPH de alto riesgo en un alto porcentaje de las muestras positivas, sugiere una asociación entre la infección con el desarrollo de cáncer colorrectal.

Introduction: Previous works have reported an association between human papilloma virus (HPV) infection and the development of colorectal cancer, and although controversy regarding this association exists. Materials and Method: This was an observational, cross-sectional, descriptive, retrospective unblinded study. Fifty pathology samples embedded in paraffin with a diagnosis of colorectal adenocarcinoma were used to isolate DNA from the tissue. DNA was extracted according to established protocols for extraction, lysis and sample rehydration. Viral DNA was identified and genotypified to amplify and detect oncogenic subtypes among 35 different subtypes included in the study, sequencing positive samples with established protocols of purification and sample analysis using microarrays. Results: Fourteen of 50 (28%) samples were identified as positive for human papilloma virus; of these 11 (22%) included one or more high-risk subtypes for neoplasia. Statistically significant differences were not found between the groups regarding age, sex, tumor location, degree of differentiation, infiltration, affected lymph nodes, metastasis and number of pack years. Conclusion: The detection of high-risk VPH subtypes in a high percentage of positive samples, suggests an association between infection and the development of colorectal cancer.

3D-printed anatomical models of the cystic duct and its variants, a low-cost solution for an in-house built simulator for laparoscopic surgery training.

OBJECTIVES: To explore a method to create affordable anatomical models of the biliary tree that are adequate for training laparoscopic cholecystectomy with an in-house built simulator. METHODS: We used a fused deposition modeling 3D printer to create molds of Acrylonitrile Butadiene Styrene (ABS) from Digital Imaging and Communication on Medicine (DICOM) images, and the molds were filled with silicone rubber. Thirteen surgeons with 4-5-year experience in the procedure evaluated the molds using a low-cost in-house built simulator utilizing a 5-point Likert-type scale. RESULTS: Molds produced through this method had a consistent anatomical appearance and overall realism that evaluators agreed or definitely agreed (4.5/5). Evaluators agreed on recommending the mold for resident surgical training. CONCLUSIONS: 3D-printed molds created through this method can be applied to create affordable high-quality educational anatomical models of the biliary tree for training laparoscopic cholecystectomy.

Habilidades de la inteligencia emocional en relación con el consumo de drogas ilícitas en adultos: una revisión sistemática / Emotional intelligence skills in relation to illicit drug use in adults: a systematic review / Habilidades da inteligência emocional em relação ao consumo de drogas ilícitas em adultos: uma revisão sistemática

Introducción: La evaluación de la inteligencia emocional (IE) es centro de interés para profesionales de diversos campos de la salud y la educación. Objetivo: Identificar el estado del arte de las habilidades de la IE y las posibles relaciones con el consumo de drogas en adultos. Metodología: Se utilizó como guía la Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). Se formuló la pregunta de investigación para dar respuesta al objetivo, se definieron los criterios de selección y, posteriormente, se buscaron artículos para el periodo 2007-2018 en las bases de datos PubMed, Scopus, EBSCO, Web of Science y OVID. Mediante el programa EndNote, se evaluaron los estudios para el análisis de los datos y sintetizarlos. Resultados: Se identificaron 1172 artículos a través de las bases de datos y se eligieron 15 estudios, de los cuales solo 3 cumplieron con los criterios de elegibilidad y calidad metodológica. Una baja IE da por resultado un consumo más intenso y frecuente de sustancias ilegales; por ende, una mayor dificultad en el manejo y regulación emocional. Conclusiones: La investigación de la IE y las adicciones son relativamente nuevas y se necesitan más estudios para comprender esta relación con mayor detalle.

Introduction: The evaluation of emotional intelligence (EI) is of particular interest for professionals in various fields of health and education. Objective: To identify the state of the art of research on EI skills and the possible relationships with drug use in adults. Methodology: The Preferred Reporting Items for Systematic Reviews and Meta-Analyzes (PRISMA) was used as a guide. First, the research question was defined to provide an answer for the objective; then, the selection criteria were established; and, finally, articles for the period 2007-2018 were found through a search in the Pub Med, Scopus, EBSCO, Web of Science, and OVID databases. Studies were then assessed and analyzed using EndNote and subsequently summarized to extract their corresponding theses. Results: A total 1,172 articles were identified across databases, out of which 15 studies were chosen and from these only 3 met the eligibility criteria and methodological quality. The sample shows that a lower EI leads to a more intense and frequent consumption of illegal substances, thus leading to greater difficulties in emotional management and regulation. Conclusions: Research on EI and addictions is relatively new, and more studies are needed to understand this relationship in greater detail.

Introdução: a avaliação da inteligência emocional (IE) é centro de interesse para profissionais de diversos campos da saúde e do ensino. Objetivo: Identificar o estado da arte das habilidades da IE, inteligência emocional, e os possíveis relacionamentos com consumo de drogas em adultos. Metodologia: A Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) foi usada como guia. Primeiro, a pergunta de pesquisa para dar resposta ao objetivo foi formulada, definiram-se os critérios de seleção e, posteriormente, a busca de artigos no período 2007-2018 foi feita. As bases de dados foram Pub Med, Scopus, EBSCO, Web of Science e OVID. Por meio do programa EndNote avaliaram-se os estudos para realizar a análise, síntese e descrição dos dados. Resultados: Foram identificados 1,172 artigos das bases de dados e elegeram-se 15 estudos, dos quais apenas três preencheram os critérios de elegibilidade e qualidade metodológica. Uma amostra baixa de IE resulta em um consumo mais intenso e frequente de sustâncias ilegais, portanto, maior dificuldade no maneio e regulação emocional. Conclusões: A pesquisa da IE e as adições é relativamente nova e são precisos mais estudos para compreender essa relação com maior detalhe.

Lesión traqueal con reparación de colgajo muscular / Tracheal Injury with Muscle Flap Repair

RESUMEN Los traumatismos en cuello se pueden clasificar las lesiones en contusas y penetrantes, en el caso de las heridas penetrantes las ocasionadas por arma punzocortante son las más frecuentes. Las manifestaciones clínicas dependen del mecanismo del trauma, tamaño y nivel de la lesión. Paciente masculino de 26 años de edad con heridas por arma punzocortante en cuello y muñecas se ingresó a quirófano de urgencia, se realizó una exploración vascular de cuello encontrando una avulsión completa del ligamento cricotiroideo, se realizó la reparación del defecto con un colgajo de los músculos cricotiroideos, cursando una buena evolución es egresado al duodécimo día. El diagnóstico de las lesiones traqueales es desafiante y debe realizase rápidamente. Se debe instalar una vía aérea definitiva de manera eficaz y planear la reconstrucción quirúrgica. El seguimiento postoperatorio realizado de manera interdisciplinaria es esencial para el pronóstico(AU)

ABSTRACT Neck injuries can be classified as blunt or penetrating injuries. Penetrating injuries caused by a puncturing gun are the most frequent. The clinical manifestations depend on trauma mechanism, and on lesion size and degree. We present the case of a 26-year-old male patient with puncture injuries to the neck and wrists. After he was admitted to the emergency room, a vascular exploration of the neck was performed, finding a complete avulsion of the cricothyroid ligament. The defect was repaired with a flap of the cricothyroid muscles. The patient had a good evolution and was discharged on the twelfth day. The diagnosis of tracheal lesions is challenging and must be carried out quickly. A definitive airway should be installed efficiently, as well as the planning of the surgical reconstruction. The postoperative follow-up performed in an interdisciplinary way is essential for the prognosis(AU)

Apendagitis epiplóica primaria / Primary epiploic appendagitis

La apendagitis epiploica primaria es una rara causa de dolor abdominal que puede simular cualquier otro cuadro de abdomen agudo. Esto hace de su diagnóstico un verdadero desafío. Se presenta el caso de un paciente masculino de 22 años de edad, sin antecedentes de importancia que ingresó a la sala de emergencias con un cuadro de dolor abdominal de 36 horas de evolución. En la exploración física presentó dolor a la palpación en el flanco derecho. Se le realizó una tomografía axial de abdomen contrastada en la cual se observó una imagen redondeada con un halo hiperdenso con borramiento de planos grasos y cambios inflamatorios a su alrededor sin relación a otro órgano abdominal. Con estos hallazgos hicimos el diagnóstico de una apendagitis epiploica primaria. El paciente fue ingresado a la sala de internamiento para manejo del dolor y con mejoría clínica es egresado a las 48 horas asintomático. Si bien la apendagitis epiploica primaria es una causa infrecuente de dolor abdominal, consideramos que su conocimiento es relevante para evitar errores diagnósticos y terapéuticos que incrementan de forma innecesaria la morbilidad como el uso inadecuado de antibióticos y de recursos hospitalarios(AU)

Primary epiploic appendagitis is a rare cause of abdominal pain that may mimic any other acute abdomen condition. This makes its diagnosis a real challenge for physicians. Here is a 22 years-old male patient, with no significant history of diseases, who were admitted to the emergency room because he had suffered abdominal pain for 36 hours. The physical exam revealed pain on palpating the right flank. He underwent a contrasted computed tomography of abdomen which showed a rounded image with hyperdense halo, fat plane effacement and inflammatory changes around, which was unrelated to another abdominal organ. These findings allowed diagnosing primary epiploic appendagitis. The patient was hospitalized for pain management and was discharged 48 hours later with clinical improvement and no symptoms. Primary epiploic appendagitis is infrequent cause of abdominal pain, however, we consider that it is important to know it so as to avoid diagnostic and therapeutic mistakes that might unnecessarily increase morbidity and the inadequate use of antibiotics and of hospital resources(AU)

Asociación de invaginación y malrotación intestinal con el Síndrome de Waugh / Association of invagination and intestinal malrotation with Waugh's síndrome

El síndrome de Waugh es una patología del neonato caracterizado por la asociación de una malrotación intestinal a una intususcepción. Existen pocos casos documentados en la literatura, lo que conlleva una baja incidencia. Presentamos el caso de un neonato femenino de 4 meses de edad quien fue llevada a tratamiento quirúrgico con oclusión intestinal y evolución posoperatoria favorable. El objetivo del trabajo es presentar el caso de un síndrome de Waugh en un lactante en cuyo cuadro se debe mantener una alta sospecha diagnostica, apoyándose con la toma de estudios de imagen complementarios ante un cuadro de dolor abdominal en pacientes lactantes cuya resolución diagnostica siempre resulta un reto para el médico. Si bien estas acciones podrán en un futuro reflejar un aumento en la incidencia de este síndrome, también es posible que el manejo de dicho síndrome se optimice. Paciente femenina de 4 meses de edad la cual fue sometida a tres intentos de desinvaginación hidrostática antes de pasar a laparotomía exploradora para corrección definitiva de su patología. La asociación de invaginación con mal rotación intestinal actualmente es subdiagnósticada, debido a la tendencia conservadora actual. Es importante realizar más estudios de imagen antes de iniciar con cualquier estrategia terapéutica, para no retrasar el manejo quirúrgico definitivo que este requiere. De esta manera se podrá ganar en la calidad de los pronósticos de los pacientes(AU)

Waugh's syndrome is a neonatal pathology characterized by the association of intestinal malrotation and intussusception. There is a low number of cases documented in literature, which implies low incidence. Here is a 4 months-old female neonate who was surgically treated because of intestinal occlusion, and her postoperative recovery was favorable. The objective was to present a Waugh's syndrome case in a newborn in which high diagnostic suspicion is important, supported by complementary imaging studies when we face abdominal pain in neonates whose diagnostic resolution is always a challenge to the physician. These actions may show an increase in the incidence of this syndrome in the future; it is also possible that the management of this disease be optimized. Hydrostatic disinvagination was performed three times in this patient before undergoing exploratory laparotomy for final correction of her pathology. The association of invagination and intestinal malrotation is poorly diagnosed at present, due to current conservative tendencies. However, it is important to perform more imaging studies before adopting any therapeutic strategy to avoid delays in the definitive surgical management of this disease(AU)

Apendicitis perforada en una hernia incisional recidivante / Perforated apendicitis in a recurrent incisional hernia

Las hernias incisionales son la complicación más común a largo plazo en las laparotomías con una incidencia hasta 20 por ciento. Se ha descrito la presencia de casi todos los órganos intrabdominales en el interior de una hernia. Presentamos el caso de un paciente con apendicitis aguda en una hernia incisional recidivante, su presentación clínica y una revisión de la literatura acerca de esta patología. Femenino de 75 años de edad presentó una hernia incisional recidivante estrangulada, se realizó una laparotomía exploradora, encontrando el apéndice cecal perforado. Se realizó la apendicectomía y una desbridación amplia de la piel y la grasa alrededor de la herida. Durante el internamiento se colocaron 4 sistemas de cicatrización asistida con presión negativa. Se tomó un injerto de espesor parcial del muslo izquierdo y se cubrió el defecto. Es importante estar consciente de las posibles complicaciones para determina la mejor estrategia en la cirugía(AU)

Incisional hernia is the most long-term common complication in laparotomies with an incidence rate up to 20 percent. The presence of almost all intra-abdominal organs inside a hernia has been described. Here is a 75 years-old female patient with acute appendicitis in a recurrent incisional hernia, its clinical presentation and the literature review about this pathology. This patient had strangulated recurrent incisional hernia and she underwent exploratory laparotomy to find perforated cecal appendix. Appendicectomy and extensive debridement of skin and fat around the wound were performed. During the hospitalization period, four negative pressure-assisted wound closure systems were placed. A partially thick graft was taken from the left thigh to cover the defect. It is important to be aware of the possible complications in order to determine the best surgical strategy(AU)

Schwannoma de retroperitoneo asociado a Neurofibromatosis tipo I / Retroperitoneal Schannoma associated to type I neurofibromatosis

Los Schwannomas son tumores de origen neural, corresponden al 1 por ciento de los tumores de retroperitoneo. En la mayoría de las ocasiones, son tumores de comportamiento benigno, encontrando que solo del 5 - 18 por ciento son malignos y aún menos frecuente es que sean de alto grado en su histología. Se trata de una paciente de 46 años de edad sin antecedentes crónico degenerativos. Con diagnóstico conocido de neurofibromatosis tipo I. Inició su padecimiento actual tres años previos a su ingreso en 2013, al presentar artralgia de rodilla derecha la cual se asocia a mialgias de forma ipsilateral. Se le solicitó como apoyo diagnostico una resonancia magnética de columna dorsal y lumbar, en la que se reporta una tumoración en la región del retroperitoneo de lado derecho con medidas de 10 x 17 cm con aparente origen espinal en L2 y L3. A pesar de ser masas de origen neural benignas la mayoría de las veces, no es infrecuente su malignización encontrando una cavidad con estructuras vecinas tomada por el tumor. En estos casos, es de vital importancia el manejo preoperatorio de manera multidisciplinaria tanto en la preparación preoperatoria, así como durante el procedimiento quirúrgico(AU)

Schwannomas are tumors of neural origin and account for 1 percent of retroperitoneal tumors. In many times, they are benign tumors and just 5 to 8 percent are malignant; high degree is even less frequent in its histology. This is a male patient aged 46 years with no history of chronic degenerative problems and diagnosis of type I neurofibromatosis. The disease appeared three years before his admission to hospital in 2013 because of right knee arthralgia associated to myalgias on the same side. Diagnostic support was requested in terms of performance of magnetic resonance of dorsal and lumbar spine; this test reported the presence of a tumor in the right side of the retroperitoneal region, it measured 10 x 17 cm with apparent spinal origin in L2 and L3. Although they are often masses of benign neural origin, their malignization is not rare. There was a cavity with adjoining structures affected by the tumor. In this type of cases, the preoperative management with multidisciplinary involvement both in the preoperative preparation and during the surgical procedure is of vital importance(AU)

Apendagitis epiplóica primaria / Primary epiploic appendagitis

RESUMEN La apendagitis epiploica primaria es una rara causa de dolor abdominal que puede simular cualquier otro cuadro de abdomen agudo. Esto hace de su diagnóstico un verdadero desafío. Se presenta el caso de un paciente masculino de 22 años de edad, sin antecedentes de importancia que ingresó a la sala de emergencias con un cuadro de dolor abdominal de 36 horas de evolución. En la exploración física presentó dolor a la palpación en el flanco derecho. Se le realizó una tomografía axial de abdomen contrastada en la cual se observó una imagen redondeada con un halo hiperdenso con borramiento de planos grasos y cambios inflamatorios a su alrededor sin relación a otro órgano abdominal. Con estos hallazgos hicimos el diagnóstico de una apendagitis epiploica primaria. El paciente fue ingresado a la sala de internamiento para manejo del dolor y con mejoría clínica es egresado a las 48 horas asintomático. Si bien la apendagitis epiploica primaria es una causa infrecuente de dolor abdominal, consideramos que su conocimiento es relevante para evitar errores diagnósticos y terapéuticos que incrementan de forma innecesaria la morbilidad como el uso inadecuado de antibióticos y de recursos hospitalarios(AU)

ABSTRACT Primary epiploic appendagitis is a rare cause of abdominal pain that may mimic any other acute abdomen condition. This makes its diagnosis a real challenge for physicians. Here is a 22 years-old male patient, with no significant history of diseases, who were admitted to the emergency room because he had suffered abdominal pain for 36 hours. The physical exam revealed pain on palpating the right flank. He underwent a contrasted computed tomography of abdomen which showed a rounded image with hyperdense halo, fat plane effacement and inflammatory changes around, which was unrelated to another abdominal organ. These findings allowed diagnosing primary epiploic appendagitis. The patient was hospitalized for pain management and was discharged 48 hours later with clinical improvement and no symptoms. Primary epiploic appendagitis is infrequent cause of abdominal pain, however, we consider that it is important to know it so as to avoid diagnostic and therapeutic mistakes that might unnecessarily increase morbidity and the inadequate use of antibiotics and of hospital resources(AU)

Asociación de invaginación y malrotación intestinal con el Síndrome de Waugh / Association of invagination and intestinal malrotation with Waugh's síndrome

RESUMEN El síndrome de Waugh es una patología del neonato caracterizado por la asociación de una malrotación intestinal a una intususcepción. Existen pocos casos documentados en la literatura, lo que conlleva una baja incidencia. Presentamos el caso de un neonato femenino de 4 meses de edad quien fue llevada a tratamiento quirúrgico con oclusión intestinal y evolución posoperatoria favorable. El objetivo del trabajo es presentar el caso de un síndrome de Waugh en un lactante en cuyo cuadro se debe mantener una alta sospecha diagnostica, apoyándose con la toma de estudios de imagen complementarios ante un cuadro de dolor abdominal en pacientes lactantes cuya resolución diagnostica siempre resulta un reto para el médico. Si bien estas acciones podrán en un futuro reflejar un aumento en la incidencia de este síndrome, también es posible que el manejo de dicho síndrome se optimice. Paciente femenina de 4 meses de edad la cual fue sometida a tres intentos de desinvaginación hidrostática antes de pasar a laparotomía exploradora para corrección definitiva de su patología. La asociación de invaginación con mal rotación intestinal actualmente es subdiagnósticada, debido a la tendencia conservadora actual. Es importante realizar más estudios de imagen antes de iniciar con cualquier estrategia terapéutica, para no retrasar el manejo quirúrgico definitivo que este requiere. De esta manera se podrá ganar en la calidad de los pronósticos de los pacientes(AU)

ABSTRACT Waugh's syndrome is a neonatal pathology characterized by the association of intestinal malrotation and intussusception. There is a low number of cases documented in literature, which implies low incidence. Here is a 4 months-old female neonate who was surgically treated because of intestinal occlusion, and her postoperative recovery was favorable. The objective was to present a Waugh's syndrome case in a newborn in which high diagnostic suspicion is important, supported by complementary imaging studies when we face abdominal pain in neonates whose diagnostic resolution is always a challenge to the physician. These actions may show an increase in the incidence of this syndrome in the future; it is also possible that the management of this disease be optimized. Hydrostatic disinvagination was performed three times in this patient before undergoing exploratory laparotomy for final correction of her pathology. The association of invagination and intestinal malrotation is poorly diagnosed at present, due to current conservative tendencies. However, it is important to perform more imaging studies before adopting any therapeutic strategy to avoid delays in the definitive surgical management of this disease(AU)

Apendicitis perforada en una hernia incisional recidivante / Perforated apendicitis in a recurrent incisional hernia

RESUMEN Las hernias incisionales son la complicación más común a largo plazo en las laparotomías con una incidencia hasta 20 por ciento. Se ha descrito la presencia de casi todos los órganos intrabdominales en el interior de una hernia. Presentamos el caso de un paciente con apendicitis aguda en una hernia incisional recidivante, su presentación clínica y una revisión de la literatura acerca de esta patología. Femenino de 75 años de edad presentó una hernia incisional recidivante estrangulada, se realizó una laparotomía exploradora, encontrando el apéndice cecal perforado. Se realizó la apendicectomía y una desbridación amplia de la piel y la grasa alrededor de la herida. Durante el internamiento se colocaron 4 sistemas de cicatrización asistida con presión negativa. Se tomó un injerto de espesor parcial del muslo izquierdo y se cubrió el defecto. Es importante estar consciente de las posibles complicaciones para determina la mejor estrategia en la cirugía(AU)

ABSTRACT Incisional hernia is the most long-term common complication in laparotomies with an incidence rate up to 20 percent. The presence of almost all intra-abdominal organs inside a hernia has been described. Here is a 75 years-old female patient with acute appendicitis in a recurrent incisional hernia, its clinical presentation and the literature review about this pathology. This patient had strangulated recurrent incisional hernia and she underwent exploratory laparotomy to find perforated cecal appendix. Appendicectomy and extensive debridement of skin and fat around the wound were performed. During the hospitalization period, four negative pressure-assisted wound closure systems were placed. A partially thick graft was taken from the left thigh to cover the defect. It is important to be aware of the possible complications in order to determine the best surgical strategy(AU)

Schwannoma de retroperitoneo asociado a Neurofibromatosis tipo I / Retroperitoneal Schannoma associated to type I neurofibromatosis

RESUMEN Los Schwannomas son tumores de origen neural, corresponden al 1 por ciento de los tumores de retroperitoneo. En la mayoría de las ocasiones, son tumores de comportamiento benigno, encontrando que solo del 5 - 18 por ciento son malignos y aún menos frecuente es que sean de alto grado en su histología. Se trata de una paciente de 46 años de edad sin antecedentes crónico degenerativos. Con diagnóstico conocido de neurofibromatosis tipo I. Inició su padecimiento actual tres años previos a su ingreso en 2013, al presentar artralgia de rodilla derecha la cual se asocia a mialgias de forma ipsilateral. Se le solicitó como apoyo diagnostico una resonancia magnética de columna dorsal y lumbar, en la que se reporta una tumoración en la región del retroperitoneo de lado derecho con medidas de 10 x 17 cm con aparente origen espinal en L2 y L3. A pesar de ser masas de origen neural benignas la mayoría de las veces, no es infrecuente su malignización encontrando una cavidad con estructuras vecinas tomada por el tumor. En estos casos, es de vital importancia el manejo preoperatorio de manera multidisciplinaria tanto en la preparación preoperatoria, así como durante el procedimiento quirúrgico(AU)

ABSTRACT Schwannomas are tumors of neural origin and account for 1 percent of retroperitoneal tumors. In many times, they are benign tumors and just 5 to 8 percent are malignant; high degree is even less frequent in its histology. This is a male patient aged 46 years with no history of chronic degenerative problems and diagnosis of type I neurofibromatosis. The disease appeared three years before his admission to hospital in 2013 because of right knee arthralgia associated to myalgias on the same side. Diagnostic support was requested in terms of performance of magnetic resonance of dorsal and lumbar spine; this test reported the presence of a tumor in the right side of the retroperitoneal region, it measured 10 x 17 cm with apparent spinal origin in L2 and L3. Although they are often masses of benign neural origin, their malignization is not rare. There was a cavity with adjoining structures affected by the tumor. In this type of cases, the preoperative management with multidisciplinary involvement both in the preoperative preparation and during the surgical procedure is of vital importance(AU)

Perforación de ciego por colitis isquémica asociada a uso de cocaína: reporte de caso / Perforation of the cecum by isquemic colitis associated with cocaine use: a case report

Introducción: El consumo de cocaína es un problema mayor a nivel mundial; los usuarios crónicos presentan complicaciones médicas graves que afectan el aparato vascular, los cuales puedenderivar en accidentes isquémicos serios. A continuación presentamos un caso de perforación intestinal secundaria a colitis isquémica por uso de cocaína. Caso clínico: Un hombre de 21 anos de edad con antecedente de uso de cocaína inició su pade cimiento 5 días antes de su ingreso con dolor abdominal, náuseas y vómitos. Con el diagnóstico de perforación de víscera hueca se realizó una laparotomía exploradora, en la cual se encontró una perforación en la cara anterior del ciego. Se realizó una hemicolectomía derecha con una ileostomía y una fístula mucocutánea de colon transverso. Discusión: La causa de las perforaciones es la isquemia local en la mucosa y la necrosis parietal. En este paciente obtuvimos una prueba de orina positiva para cocaína; además, con el ante cedente de uso intenso de esta sustancia y el resultado en el reporte histopatológico pudimos llegar a este diagnóstico. Conclusión: La colitis isquémica asociada a uso de cocaína debe ser considerada como diagnós tico diferencial en pacientes jóvenes con dolor abdominal agudo y/o sangrado rectal.

Introduction: Cocaine use is a major problem worldwide. Chronic users have serious medical complications that affect the vascular system, which can lead to serious ischemic events. We describe a case of intestinal perforation secondary to ischemic colitis caused by cocaine. Case report: A 21-year-old man with a history of cocaine started 5 days before with abdominal pain, nausea and vomiting. With a diagnosis of a perforated intestine, a exploratory laparo tomy was performed, in which a perforation of the anterior wall of the cecum was found. A right hemicolectomy with ileostomy and a mucocutaneous fistula of the transverse colon were carried out. Discussion: Perforations are caused by local ischemia of the mucosa and parietal necrosis. In this patient, a urine test for cocaine was positive, in addition to the history of intensive use of this substance and a pathology report. Conclusion: Ischemic colitis associated with cocaine use should be considered as a differential diagnosis in young patients with acute abdominal pain and/or rectal bleeding.

[Assessment of antibiotic use and impact of an intervention intended to modify the prescribing behavior in surgical prophylaxis in 6hospitals in the metropolitan area of Monterrey, Mexico]. / Evaluación del uso de antibióticos e impacto de una intervención dirigida a modificar la conducta prescriptiva en profilaxis quirúrgica en 6hospitales del área metropolitana de Monterrey.

BACKGROUND: Improper use of antibiotics increases antimicrobial resistance. OBJECTIVE: Evaluate the use of antibiotics and the impact of an intervention designed to improve antibiotic prescription for surgical prophylaxis in 6 hospitals of Monterrey, Mexico. MATERIAL AND METHODS: Design: A prospective multicenter survey and a pretest-postest experimental study. Phase 1: Survey to evaluate the use of antibiotics through an especially designed guide. Phase 2: Intervention designed to improve antibiotic prescription for surgical prophylaxis by the medical staff by using printed, audiovisual and electronic messages. Phase 3: Survey to evaluate the impact of the intervention. ANALYSIS: Frequencies, percentages, medians, ranges and X2 test. RESULTS: Phase 1: We evaluated 358 surgical patients, 274 prophylactic antibiotic regimens. A total of 96% of antibiotics regimens began with inappropriate timing (290/302), 82.8% were inappropriate regimens (274/331), 77.7% were in inappropriate dosage (230/296), 86% of inadequate length (241/280), and in 17.4% restricted antibiotics were used (52/299). Phase 2: 9 sessions including 189 physicians (14 department chairs, 58 general practitioners and 117 residents). Phase 3: We evaluated 303 surgical patients, 218 prophylactic antibiotics regimens. Inappropriate treatment commencement was reduced to 84.1% (180/214) (P<0.001), inappropriate regimens to 75.3% (162/215) (P=0.03), inappropriate dosages to 51.2% (110/215) (P<0.001), and use of restricted antibiotics to 8.3% (18/215) (P=0.003). CONCLUSIONS: Inappropriate use of prophylactic antibiotics in surgery is a frequent problem in Monterrey. The intervention improved the antibiotic prescription for surgical prophylaxis by reducing inappropriate treatment commencement, regimens, dosages, and overuse of restricted antibiotics. It is necessary to strengthen strategies to improve the prescription of antibiotics in surgical prophylaxis.

[Case report: Occlusion and intestinal necrosis by obturator hernia]. / Reporte de caso: oclusión y necrosis intestinal por hernia del obturador.

BACKGROUND: Obturator hernia is a rare variety of abdominal hernia, it accounts for 0.07%-1.0% of all hernias, and occurs most often in women of advanced age and multiparous. CLINICAL CASE: A 78-year-old female was admitted to the Emergency Department due to nausea, vomiting, complaints of abdominal discomfort and obstipation for the last 7 days. Abdominal CT scan showed dilated small bowel loops and multiple air-fluid levels near to a small bowel loop obturator hernia, between external obturator and pectineus muscle. Emergency laparotomy was performed and during the surgery, loop of small intestine was revealed herniated into the obturator foramen, 130cm from the angle of Treitz. Necrosis of small intestine was found, without perforation. Resection of the 10cm affected jejunal segment was performed and a side-to-side bowel anastomosis was fashioned. Also simple suture closure of obturator foramen was performed. CONCLUSION: Obturator hernia is relatively rare. However physicians should keep it in mind and have clinical suspicion for obturator hernia as a cause of intestinal obstruction in female, elderly and multiparous patients in order to make an appropriate diagnosis and avoid bowel ischaemia.

[Impact of telmisartan on glomerular filtration in laparoscopic surgery. A double blinded randomised controlled study]. / Impacto de telmisartán en la filtración glomerular en cirugía laparoscópica. Estudio aleatorizado doble ciego.

BACKGROUND: Laparoscopic surgery has begun to replace a great number of procedures that were previously practiced using open or conventional techniques. This is due to the minimal invasion, small incisions, and short time recovery. However, it has come to knowledge, that the increase in intra-abdominal pressure due to carbon dioxide pneumoperitoneum during laparoscopic surgery causes cardiovascular, respiratory, endocrine, and renal alterations. OBJECTIVE: To evaluate the nephroprotective effect of telmisartan, an angiotensin II AT1 receptor antagonist, on glomerular filtration in laparoscopic surgery. MATERIAL AND METHODS: Analytical prospective, randomised, double-blind study was conducted on patients undergoing elective laparoscopic cholecystectomy. They were randomised into 2 groups, with the treatment group receiving a single dose of 40mg telmisartan orally 2hours prior to surgery, and the placebo group. RESULTS: There were 20 patients in each group (n=40), with a mean age of 32.65 years in the treatment group. Plasma creatinine did not show any significant change in the different time lapse in which blood samples were taken, but creatinine clearance at the end of surgery (196.415±56.507 vs. 150.1995±75.081; p=0.034), and at 2 h postoperative period (162.105±44.756 vs. 113.235±31.228; p≤0.001) was statistically significant, which supports an increase in renal function in the telmisartan group. CONCLUSION: The use of telmisartan, an angiotensin II AT1 receptor antagonist, offers renal protection during laparoscopic surgery.

[Case report: Rapidly growing abdominal wall giant desmoid tumour during pregnancy]. / Reporte de caso: tumor desmoides gigante de pared abdominal con rápido crecimiento durante el embarazo.

BACKGROUND: Desmoid tumours are one of the rarest tumours worldwide, with an estimated yearly incidence of 2-4 new cases per million people. They are soft tissue monoclonal neoplasms that originate from mesenchymal stem cells. It seems that the hormonal and immunological changes occurring during pregnancy may play a role in the severity and course of the disease. CLINICAL CASE: The case is presented on 28-year-old female in her fifth week of gestation, in whom an abdominal wall tumour was found attached to left adnexa and uterus while performing a prenatal ultrasound. The patient was followed up under clinical and ultrasonographic surveillance. When she presented with abnormal uterine activity at 38.2 weeks of gestation, she was admitted and obstetrics decided to perform a caesarean section. Tumour biopsy was taken during the procedure. Histopathology reported a desmoid fibromatosis. A contrast enhanced abdominal computed tomography scan was performed, showing a tumour of 26×20.5×18cm, with well-defined borders in contact with the uterus, left adnexa, bladder and abdominal wall, with no evidence of infiltration to adjacent structures. A laparotomy, with tumour resection, hysterectomy and left salpingo-oophorectomy, components separation techniques, polypropylene mesh insertion, and drainage was performed. The final histopathology report was desmoid fibromatosis. There is no evidence of recurrence after 6 months follow-up. CONCLUSIONS: Desmoid tumours are locally aggressive and surgical resection with clear margins is the basis for the treatment of this disease, using radiotherapy, chemotherapy and hormone therapy as an adjunct in the treatment.