Reparação da parede abdominal com membranas acelulares de pericárdio bovino - Parte I - Achados clínicos e radiológicos / Abdominal wall repair with acellular bovine pericardial membranes - Part I - Clinical and radiological findings

Introdução: Reduzindo os índices de recidiva de forma impactante, o emprego de biomateriais como "telas de reforço" na reparação de diferentes defeitos da parede abdominal tornou-se rotina quase obrigatória para o sucesso dessas reparações. A partir da década de 1990 houve a introdução de matrizes biológicas acelulares, iniciando-se assim uma nova era na reparação dos defeitos da parede abdominal. O objetivo é avaliar a funcionalidade do pericárdio bovino acelularizado em reparações da parede abdominal. Método: Trinta pacientes foram submetidos a reparação de defeitos da parede abdominal, com biopróteses acelulares de pericárdio bovino, perfazendo um total de 40 implantes anatomicamente individualizados. O seguimento médio foi de 31 meses, sendo os pacientes avaliados clinicamente e radiologicamente. Em três casos foram feitas biópsias das áreas implantadas permitindo análise histológica do material. Resultados: Não se observou recidiva das herniações em nenhum dos casos, tanto clinica como radiologicamente. Também não houve registro de hematomas, infecções ou qualquer fenômeno de natureza reacional local ou sistêmica. Radiologicamente, não foi possível visualizar as matrizes no local de implantação em qualquer dos períodos de pós-operatório analisados. Conclusão: As matrizes mostraram similaridade às demais membranas biológicas descritas na literatura internacional. Representando uma importante atualização e evolução conceitual, as membranas acelulares de pericárdio bovino podem ser incorporadas ao arsenal terapêutico nas reparações de parede abdominal.

Introduction: Reducing recurrence rates significantly, the use of biomaterials as "reinforcement meshes" in the repair of different abdominal wall defects has become an almost mandatory routine for the success of these repairs. From the 1990s onwards, acellular biological matrices were introduced, thus beginning a new era in the repair of abdominal wall defects. The objective is to evaluate the functionality of the acellularized bovine pericardium in abdominal wall repairs. Method: Thirty patients underwent repair of abdominal wall defects using acellular bovine pericardium bioprostheses, making a total of 40 anatomically individualized implants. The average follow-up was 31 months, with patients being evaluated clinically and radiologically. In three cases, biopsies were taken from the implanted areas, allowing histological analysis of the material. Results: No recurrence of herniations was observed in any of the cases, both clinically and radiologically. There were also no records of bruises, infections or any phenomenon of a local or systemic reaction nature. Radiologically, it was not possible to visualize the matrices at the implantation site in any of the postoperative periods analyzed. Conclusion: The matrices showed similarity to other biological membranes described in the international literature. Representing an important update and conceptual evolution, acellular bovine pericardial membranes can be incorporated into the therapeutic arsenal in abdominal wall repairs.

Reparação da parede abdominal com membranas acelulares de pericárdio bovino - Parte II - Análises histológicas e morfométricas / Repair of the abdominal wall with acellular bovine pericardial membranes - Part II - Histological and morphometric analyses

Introdução: Análise histológica é a principal ferramenta de avaliação de biopróteses acelulares, em sua maioria em caráter experimental. O objetivo é analisar histologicamente a matriz acelular de pericárdio bovino em reparações de parede abdominal implantada em humanos. Método: De uma série de 30 reparações com a membrana, 3 pacientes foram submetidas a revisão cirúrgica não relacionada aos implantes, aos 13, 22 e 23 meses de pós-operatório, obtendo-se biópsias das áreas previamente implantadas. Além da avaliação dos aspectos básicos de biocompatibilidade e neoformação tecidual, as lâminas foram digitalizadas e submetidas a análise computadorizada com o software ImageJ para quantificação da cinética de degradação das membranas, associada à análise da dimensão fractal das amostras. Os valores obtidos para porcentagens de membrana residual tiveram suas médias comparadas por análise de variância (ANOVA) e pelo teste T de Student não pareado, também utilizado para os valores da quantificação da dimensão fractal. Resultados: Foi demonstrada a biocompatibilidade do material, com neoformação tecidual, deposição de colágeno e tecido celularizado de aspecto normal, sem reações locais importantes. Fragmentos residuais da membrana foram quantificados em 40%±7% aos 13 meses, em 20%±6% aos 22 meses e em 17%±6% aos 23 meses de pós-operatório, com a análise da dimensão fractal indicando uma progressiva degradação dos implantes, com significância estatística entre 13 meses e as amostras tardias. Conclusão: Os resultados atestaram a funcionalidade do pericárdio bovino acelular sob diferentes níveis de estresse mecânico nas reparações da parede abdominal em humanos.

Introduction: Histological analysis is the main tool for evaluating acellular bioprostheses, mostly on an experimental basis. The objective is to histologically analyze the acellular matrix of bovine pericardium in abdominal wall repairs implanted in humans. Method: From a series of 30 repairs with the membrane, 3 patients underwent surgical revision unrelated to the implants at 13, 22, and 23 months postoperatively, obtaining biopsies of the previously implanted areas. In addition to evaluating the basic aspects of biocompatibility and tissue neoformation, the slides were digitalized and subjected to computerized analysis with the ImageJ software to quantify the kinetics of membrane degradation associated with the analysis of the fractal dimension of the samples. The values obtained for percentages of residual membrane had their means compared by analysis of variance (ANOVA) and the unpaired Student's T test, also used for the fractal dimension quantification values. Results: The biocompatibility of the material was demonstrated, with tissue neoformation, collagen deposition, and cellularized tissue with a normal appearance without important local reactions. Residual fragments of the membrane were quantified at 40%±7% at 13 months, at 20%±6% at 22 months, and at 17%±6% at 23 months postoperatively, with the analysis of the fractal dimension indicating a progressive degradation of implants, with statistical significance between 13 months and late samples. Conclusion: The results confirmed the functionality of the acellular bovine pericardium under different levels of mechanical stress in abdominal wall repairs in humans.

Modifiable comorbidities impact on ventral hernia recurrence following robotic abdominal wall reconstruction using resorbable biosynthetic mesh: 36-month follow-up.

Background: There is an ongoing debate on the role of comorbidities in hernia outcomes, particularly with minimally invasive approaches. This study evaluated the impact of modifiable comorbidities (MCMs) on 36-month hernia recurrence rates after robotic transversus abdominis release (TAR) with resorbable biosynthetic mesh underlay for primary ventral hernia repair. Methods: A review of medical records for patients who underwent the robotic TAR procedure between January 2015 and May 2022 performed by a single surgeon was conducted. Patients were separated into three groups: those with 0, 1, and 2+ MCMs, followed by a breakdown of comorbidity types and combinations of comorbidities. MCMs included obesity, diabetes, and tobacco use. The primary outcomes included hernia recurrence at 36 months and the time between surgery and recurrence. Results: 175 patients met the inclusion criteria, with a mean hernia diameter of 12.9 ± 5.4 cm and a mean BMI of 34 ± 8 kg/m2. 9.7 % of patients experienced hernia recurrence at 36-month follow-up. No significant difference in the recurrence rate and length of time between surgery and recurrence was observed between the groups (p = .265 and p = .283, respectively). No group, single comorbidity, or a combination of comorbidities was found to have significantly increased odds of recurrence at 36 months. Conclusion: The presence of MCMs, either alone or in combination with another, did not significantly increase the odds of hernia recurrence at 36 months following ventral hernia repair using this approach. Future studies with larger sample sizes and multiple surgeons are needed to corroborate this data. Key message: Modifiable comorbidities have previously been shown to increase the risk of hernia recurrence after ventral hernia repair. Our study found relatively low rates of hernia recurrence and no significantly increased odds of recurrence among different comorbid groups at 36-month follow-up following robotic transversus abdominis release with resorbable biosynthetic mesh underlay.

Experiencia del tratamiento de la hernia incisional en un hospital de tercer nivel en Colombia / Experience of the treatment of incisional hernia in a third level hospital in Colombia

Introducción. El manejo de las hernias se ha instaurado como un problema quirúrgico común, estimándose su aumento en los próximos años. El objetivo del presente trabajo fue describir el curso clínico, los aspectos del tratamiento quirúrgico y factores asociados a la presencia de complicaciones en pacientes intervenidos por hernia incisional. Métodos. Estudio descriptivo en el que se analizaron las características de una cohorte de pacientes llevados a corrección quirúrgica de hernia incisional en el Hospital Universitario Hernando Moncaleano Perdomo, un centro de alta complejidad en Neiva, Colombia, entre 2012 y 2019. Los datos fueron recolectados en programa Microsoft Excel® y analizados en SPSSTM, versión 21. Resultados. Se realizaron 133 correcciones de hernias incisionales, 69,9 % en mujeres y la mayoría ubicadas en la línea media (84,2 %). La edad media de los pacientes al momento de la intervención fue de 52 años ±14,6. Las comorbilidades más frecuentes fueron obesidad, hipertensión y diabetes. La causa más frecuente de la hernia fue traumática (61,7 %). La frecuencia de complicaciones fue superior al 50 %, en su mayoría menores; se encontró asociación con obesidad para la presencia de seroma. La mortalidad fue del 2,3 %. Conclusión.La hernia incisional es un problema de salud pública. Consideramos que la obesidad y el uso de malla pueden ser factores de riesgo asociados con la presentación de complicaciones postoperatorias, así como el aumento de los gastos relacionados con días de hospitalización

Introduction. Hernias management has become a common surgical problem, with an estimated increase in the coming years. The objective of this study was to describe the clinical course, aspects of surgical treatment and factors associated with the presence of complications in patients operated on for incisional hernia. Methods. Descriptive study, in which the characteristics of a cohort of patients taken to surgical correction of incisional hernia at the Hospital Universitario Hernando Moncaleano Perdomo, a high complexity medical center located in Neiva, Colombia, between 2012 and 2019 were analyzed, whose data were collected in Microsoft Excel® software and analyzed in SPSSTM, version 21. Results. One-hundred-thirty-three incisional hernia corrections were performed. The mean age at the intervention was 52 years ±14.6. The most frequent comorbidities were weight disorders, hypertension and diabetes. Only one laparoscopy was performed, the first etiology of the hernia was traumatic (61.7%) and midline (84.2%). The frequency of complications was greater than 50%, mostly minors. An association with obesity was found for the presence of seroma. Mortality was 2.3%. Conclusion. Incisional hernia is a public health problem. We consider that obesity and the use of mesh are a risk factor associated with the presentation of postoperative complications as well as the increase in costs related to days of hospitalization

Caracterización de un grupo de pacientes sometidos a herniorrafia lateral con malla retromuscular en un centro de tercer nivel de 2015 a 2019 / Characterization of a group of patients who underwent lateral herniorrhaphy with retromuscular mesh in a third level center from 2015 to 2019

Introducción. El objetivo de este estudio fue describir las características de la población y determinar las principales complicaciones de los pacientes que son llevados a cirugía por hernia lateral en el abdomen. Métodos. Estudio observacional retrospectivo, que incluyó a los pacientes sometidos a herniorrafia lateral, entre 2015 y 2019 en un centro de tercer nivel. La información se obtuvo del registro de historias clínicas. Las variables analizadas se clasificaron según las características sociodemográficas de los pacientes, clínicas y quirúrgicas. Se hizo una caracterización de acuerdo con los resultados encontrados. Resultados. Se incluyeron 51 pacientes con hernia lateral, 29 de ellos mujeres, con un promedio de edad de 59 años y de índice de masa corporal de 28 kg/m2. El 60 % tenía comorbilidades de base, siendo la hipertensión arterial la más frecuente. La mayoría se clasificaron como ASA II. En cuanto a la localización, la L3 fue la más común (37,2 %). Se presentaron complicaciones postquirúrgicas en el 27,4 % de los pacientes, siendo las más frecuentes seromas, hematomas e infecciones de sitio operatorio. Ningún paciente requirió reintervención para el manejo de las complicaciones. Conclusión. Conocer la población y determinar cuáles son las principales complicaciones postquirúrgicas de un procedimiento permite tomar medidas para disminuir su frecuencia, pero en este caso, se necesitan estudios adicionales para determinar cuáles son los mayores factores asociados a las complicaciones

Introduction. To describe the characteristics of the population and to determine the main complications of patients who undergo surgery for lateral hernia. Methods. We performed a retrospective observational study, including patients who underwent lateral herniorrhaphy between 2015 and 2019 in a third-level medical center, obtaining information through the registration of medical records. The analyzed variables were classified according to the patients' clinical, surgical and sociodemographic characteristics, performing a characterization according to the results found. Results. Fifty-one patients due to lateral hernia were included, 29 of them were women, with a mean age of 59 years and a body mass index of 28 Kg/m2. Of those, 60% presented basic comorbidities, being arterial hypertension the most frequent. Most were classified as ASA II. Regarding the location, the L3 was the most commonly presented hernia, referring to 37.2%. Postoperative complications occurred in 27.4% of the patients, with seromas being the most frequent, followed by hematomas and surgical site infections. No patient required reintervention for the management of complications. Conclusion. By knowing the population and determining which are the main complications, measures can be taken to reduce their incidence. Additional studies are needed to determine which are the main factors associated with complications

Congenital Paraduodenal Hernia: A Case Report

Paraduodenal hernia is a rare congenital anomaly that arises from an alteration in the midgut rotation during embryogenesis. Consequently, the small intestine becomes trapped in a sac of the posterior mesentery of the colon. This entity can compromise the intestinal segment's viability and the patient's life. Its diagnosis is difficult, rarely suspected, and often confused with other causes of abdominal pain. We present the case of a 29-year-old male patient with a documented paraduodenal hernia during surgery, its correction, and follow-up, in which no complications were reported.

La hernia paraduodenal es una anomalía congénita poco frecuente que surge de una alteración en la rotación del intestino medio durante la embriogénesis. En consecuencia, el intestino delgado queda atrapado en un saco del mesenterio colónico posterior. Dicha entidad puede comprometer la viabilidad del segmento intestinal y la vida del paciente. Su diagnóstico es difícil, pocas veces sospechado y muchas veces confundido con otras causas de dolor abdominal. Presentamos el caso de un paciente de 29 años con una hernia paraduodenal documentada durante la cirugía, su corrección y seguimiento, en el cual no se documentaron complicaciones.

Onlay versus rives-stoppa techniques in the treatment of incisional hernias / Técnicas onlay versus rives-stoppa no tratamento das hérnias incisionais

ABSTRACT BACKGROUND: In the surgical correction of large incisional hernias, the use of a prosthesis is essential in most cases regardless of the technique chosen. The preference is for the polypropylene prosthesis. AIMS: To compare the onlay and Rives-Stoppa techniques in the correction of incisional hernias, their immediate results, complications, advantages, and disadvantages. METHODS: Two groups of patients with incisional hernias were analyzed, submitted to the onlay (19 patients) and Rives-Stoppa (17 patients) techniques, and that used polypropylene prostheses. General epidemiological variables, perioperative data variables, and postoperative complications were assessed. RESULTS: The patients' epidemiologic profile was similar between both groups. The majority were women (58.4%), with a mean age of 65.5 years and a previous mean body mass index of 41.5 kg/m². The Rives-Stoppa technique was employed in most patients (52.7%). Those submitted to the onlay technique had longer abdominal drainage time and longer hospital stay, as well as a higher incidence of seromas and surgical wound infection. CONCLUSIONS: The incisional herniorrhaphy technique with the placement of a pre-peritoneal polypropylene mesh by the Rives-Stoppa technique was superior to the onlay due to lower rates of drain use, hospital stay, and postoperative complications.

RESUMO RACIONAL: Na correção cirúrgica das grandes hérnias incisionais, independente da técnica escolhida, na maioria das vezes, o uso de uma prótese é imprescindível. A preferência é pelas próteses de polipropileno. OBJETIVOS: Comparar a técnicas onlay e Rives-Stoppa na correção de hérnias incisionais, os seus resultados imediatos, as complicações, as vantagens e desvantagens. MÉTODOS: Foram analisados dois grupos de portadores de hérnias incisionais, submetidos à técnica onlay (19 pacientes) e técnica Rives-Stoppa (17 pacientes), utilizando prótese de polipropileno. As variáveis gerais epidemiológicas, variáveis de dados perioperatórios e complicações pós-operatórias foram analisados. RESULTADOS: O perfil epidemiológico dos pacientes foi semelhante entre os grupos, a maioria eram mulheres (58.4%), com média de idade de 65.5 anos e com índice de massa corpórea (IMC) médio prévio de 41,5kg/m². A técnica de Rives-Stoppa foi utilizada na maioria dos pacientes (52.7%). Pacientes submetidos a técnica onlay apresentaram maior tempo de uso de dreno abdominal e maior tempo de internação hospitalar, além de maior incidência de seromas e infecção de ferida operatória. CONCLUSÕES: A técnica de herniorrafia incisional com colocação de tela de polipropileno pré-peritoneal, pela técnica de Rives-Stoppa apresentou-se superior à técnica onlay, devido menor taxa de uso de drenos, menor taxa de tempo de internação hospitalar, bem como menor taxa de complicações pós-operatórias.

Manejo laparoscópico de las hernias ventrales mediante abordaje totalmente extraperitoneal (eTEP): experiencia inicial y resultados a corto plazo / Laparoscopic Management of Ventral Hernias by Totally Extraperitoneal (eTEP) Approach: Initial Experience and Short-Term Results / Manejo laparoscópico de hérnias ventrais usando uma abordagem totalmente extraperitoneal (eTEP): experiência inicial e resultados em curto prazo

Introducción. El manejo de la hernia ventral sigue siendo un desafío para los cirujanos. Su reparación mediante técnicas mínimamente invasivas, como la totalmente extraperitoneal (eTEP) laparoscópica, permite una amplia disección del espacio a reparar, una recuperación postoperatoria más rápida, menor dolor postoperatorio y estancia hospitalaria. El abordaje eTEP es un enfoque novedoso que utiliza el espacio retromuscular para colocar material protésico y fortalecer la pared abdominal. El objetivo es describir los resultados a corto plazo de nuestra experiencia inicial con la técnica eTEP en el manejo de las hernias ventrales. Metodología. Estudio observacional, descriptivo, retrospectivo, donde se incluyen pacientes con el diagnóstico de hernia ventral, sometidos a cirugía laparoscópicaeTEP, entre julio-2021 y junio-2022. Resultados. De un total de 21 pacientes, el 61.9% fueron hombres. El 47.6% tenían sobrepeso y el 52.4% obesidad. Estancia hospitalaria media: 1.6 días. El 66.7% fueron hernias incisionales. Las técnicas quirúrgicas realizadas fueron: Rives-Stoppa (71.4%) asociándose liberación del músculo transverso en el 28.6%. El 19% de los pacientes presentaron complicaciones globales y solo uno fue grave, requiriendo reintervención quirúrgica. Se observó la presencia de seroma clínico en el 9.5% y ecográfico en 57.1%. No se evidenciaron hematomas, infección de herida quirúrgica ni casos de recidiva herniaria. Discusión y conclusiones. El abordaje laparoscópico eTEP Rives-Stoppa, asociado o no a separación posterior de componentes, en el manejo de las hernias ventrales ofrece buenos resultados asociando una baja incidencia de complicaciones postoperatorias, corta estancia hospitalaria, baja incidencia de recidivas herniarias, por lo que podría considerarse una técnica segura y efectiva en el tratamiento de las hernias ventrales.

Introduction. Managing ventral hernia remains a challenge for surgeons. Repairing it using minimally invasive techniques, such as laparoscopic totally extraperitoneal (eTEP), which allows for a wide dissection of the space to be repaired, faster postoperative recovery, less postoperative pain and shorter hospital stay. The eTEP approach is a novel technique that focus on the uses of the retromuscular space to place prosthetic material and strengthen the abdominal wall. The objective is to describe the short-term results of our initial experience with the eTEP technique in the management of ventral hernias. Methodology. Observational, descriptive, retrospective, study, which included patients with a diagnosis of ventral hernia, undergoing laparoscopic eTEP surgery, between July-2021 and June-2022. Results. Of a total of 21 patients, 61.9% were men. 47.6% were overweight and 52.4% were obese. Average hospital stay: 1.6 days. 66.7% were incisional hernias. The surgical techniques performed were: Rives-Stoppa (71.4%) with associated transversus abdominis muscle release in 28.6%. 19% of the patients presented global complications and only one was severe, requiring surgical reintervention. The presence of clinical seroma was observed in 9.5% and ultrasound in 57.1%. There was no evidence of hematomas, surgical wound infection or cases of hernia recurrence. Discussion and conclusions. The laparoscopic-eTEP Rives-Stoppa approach, associated or not with posterior separation of components, in the management of ventral hernias offers good results with a low incidence of postoperative complications, short hospital stay, low incidence of hernia recurrences, so it could be considered a safe and effective technique in the treatment of ventral hernias.

Introdução. O manejo da hérnia ventral continua sendo um desafio para os cirurgiões. Seu reparo por meio de técnicas minimamente invasivas, como a totalmente extraperitoneal (eTEP) laparoscópica, permite ampla dissecção do espaço a ser reparado, recuperação pós-operatória mais rápida, menor dor pós-operatória e menor tempo de internação. A abordagem eTEP é uma nova abordagem que usa o espaço retromuscular para colocar material protético e fortalecer a parede abdominal. O objetivo é descrever os resultados de curto prazo de nossa experiência inicial com a técnica eTEP no manejo de hérnias ventrais. Metodologia. Estudo observacional, descritivo, retrospectivo, longitudinal, que inclui pacientes com diagnóstico de hérnia ventral, submetidos a cirurgia laparoscópica-eTEP, entre julho-2021 e junho-2022. Resultados. De um total de 21 pacientes, 61.9% eram homens; 47.6% estavam com sobrepeso e 52.4% obesos. Tempo médio de internação: 1.6 dias; 66.7% eran hérnias incisionais. As técnicas cirúrgicas realizadas foram: Rives-Stoppa (71.4%) associada à liberação do músculo transverso em 28.6%. 19% dos pacientes apresentaram complicações globais e apenas um foi grave, necesitando de reintervenção cirúrgica. A presença de seroma clínico foi observada em 9.5% e ultrassonográfica em 57.1%. Não houve evidência de hematoma, infecção de ferida cirúrgica ou casos de recidiva de hérnia. Discussão e conclusões. A abordagem laparoscópica eTEP Rives-Stoppa, associada ou não à separação posterior dos componentes, no manejo das hérnias ventrais oferece bons resultados associando baixa incidência de complicações pós-operatórias, curto tempo de internação, baixa incidência de recidivas de hérnias, pelo que pode ser considerada uma técnica segura e eficaz no tratamento das hérnias ventrais.

Hernias traumáticas de la pared abdominal en pediatría: serie de tres casos / Traumatic hernias of the abdominal wall in pediatrics: Series of three cases

Introducción. Las hernias traumáticas de la pared abdominal son una entidad de muy rara ocurrencia en niños, con pocos casos descritos. Son lesiones causadas por trauma cerrado cuando las fuerzas resultantes del trauma no tienen la suficiente energía para romper la piel, pero son suficientes para producir una disrupción de las fibras musculares y la fascia. Métodos. Se presentan tres casos clínicos de niños con hernias traumáticas, el primero tipo I y los otros dos, tipo II, cuyo diagnóstico y tratamiento quirúrgico se llevaron a cabo por el servicio de cirugía pediátrica en un hospital de alto nivel de atención en Colombia. Resultados. Los tres pacientes fueron llevados a manejo quirúrgico sin prótesis, el primero por abordaje abierto y los otros dos por cirugía videoasistida, con buena evolución y sin recidivas en el seguimiento. Discusión. Las hernias traumáticas de la pared abdominal son más frecuentes en varones, como en nuestros casos, y del lado derecho. El diagnóstico de este tipo de hernias es clínico y se apoya en imágenes, teniendo en cuenta que no hay antecedente de hernia en la región afectada. El tratamiento es quirúrgico, pero es controversial el momento del mismo y el uso de materiales protésicos, puesto que existe la posibilidad de recidiva en los primeros meses en los casos de reparo primario. Conclusión. A pesar de la rareza de esta entidad, presentamos tres pacientes pediátricos a quienes se les realizó diagnóstico y manejo quirúrgico tempranos, con buena evolución y seguimiento a más de tres años.

Introduction. Traumatic hernias of the abdominal wall in children are a very rare entity, with few cases described. They are injuries caused by blunt trauma when the forces resulting from low-energy trauma to break the skin, but enough to produce a disruption of the muscle fibers and fascia. Methods. Three clinical cases of traumatic hernias in children are presented, one type I and the other two type II, whose diagnosis and surgical treatment were carried out by the pediatric surgery service in a high-level hospital in Colombia. Results. The three patients underwent surgical management without prosthesis, one by open approach and the other two by video-assisted surgery, with good evolution and no recurrence during follow-up. Discussion. Traumatic hernias of the abdominal wall are more common in male patients as in our cases, and on the right side of the abdomen. The diagnosis of this type of hernia is clinical and based on images, taking into account that there is no history of hernia in the affected region. The treatment is surgical, but its timing and the use of prosthetic materials are controversial, since there is the possibility of recurrence in the first few months in cases of primary repair. Conclusion. Despite the rarity of this entity, we present three pediatric patients who underwent early diagnosis and surgical management, with good evolution and follow-up for more than three years.

Abdominal Wall Hernias: different types of classifications and complications / Hernias de la Pared abdominal: diferentes tipos de clasificaciones y complicaciones

Abdominal hernias are defects due to loss of continuity of the fasciae and/or muscles with the protrusion of abdominal structures. They are the third most prevalent and incident abdominal pathology worldwide and the second pathology of consultation in general surgery in patients of age limits. There are various factors that contribute to their formation, but within the scientific community there are various types of classifications, which differ according to the professional training school and their decision-making. This bibliographic review aims to expose the most used abdominal hernia classification systems such as the European one that has a morphological vision, the Ventral Hernia Working Group that proposes its aspect on recurrence together with the modified one that exposes comorbidity and the staging system of ventral hernia that provides a comprehensive approach to classification and management. In addition to the most common complications of the same.

Las hernias abdominales son defectos por pérdida de continuidad de las fascias y/o músculos con la protrusión de estructuras abdominales. Son la tercera patología abdominal más prevalente e incidente a nivel mundial y la segunda patología de consulta en cirugía general en pacientes en límites de edades. Existen diversos factores que contribuyen a su formación, pero dentro de la comunidad científica existe diversos tipos de clasificaciones, las cuales difieren de acuerdo a la escuela de formación de los profesionales y su toma de decisiones. La presente revisión bibliográfica pretende exponer los sistemas de clasificación de hernias abdominales más utilizados como la Europea que tiene una visión morfológica, el Grupo de Trabajo de Hernia Ventral que propone su aspecto sobre la recurrencia junto con el modificado que expone comorbilidad y el sistema de estadificación de hernia ventral que brinda un enfoque integral para clasificación y manejo. Además de las complicaciones más habituales de las mismas.

Application progress of mesh in the environment of potential contaminated and contaminated abdominal hernia repair / 国际外科学杂志

Abdominal hernia repair is a challenging surgery with high complication rate and recurrence rate, especially in potentially contaminated or contaminated abdominal wall hernias. The application of hernia mesh has significantly reduced the recurrence rate. However, different types of meshes have their own advantages and disadvantages. There are still controversies regarding the selection of mesh in the environment of potential contaminated and contaminated abdominal hernia repair. The biological mesh, which was once considered that have anti-infection advantages and was widely used, has not been found to reduce the infection rate in recent studies, but instead leads to a higher recurrence rate and expensive medical costs. On the contrary, synthetic mesh represented by monofilament and large mesh polypropylene mesh have achieved good results in potentially contaminated or contaminated hernia repairs recently. The emergence of new types of meshes such as absorbable synthetic mesh may be a better choice for potentially contaminated or contaminated abdominal hernia repair. This article reviews the application progress of mesh in the environment of potential contaminated and contaminated abdominal hernia repair, aiming to provide reliable evidence for the selection of mesh for these patients.

DECOMP Report: Answers surgeons expect from an abdominal wall imaging exam / Relatório DECOMP: Respostas que os cirurgiões esperam de um exame de imagem da parede abdominal

ABSTRACT Abdominal wall (AW) hernias are a common problem faced by general surgeons. With an essentially clinical diagnosis, abdominal hernias have been considered a simple problem to be repaired. However, long-term follow-up of patients has shown disappointing results, both in terms of complications and recurrence. In this context, preoperative planning with control of comorbidities and full knowledge of the hernia and its anatomical relationships with the AW has gained increasing attention. Computed tomography (CT) appears to be the best option to determine the precise size and location of abdominal hernias, presence of rectus diastase and/or associated muscle atrophy, as well as the proportion of the hernia in relation to the AW itself. This information might help the surgeon to choose the best surgical technique (open vs MIS), positioning and fixation of the meshes, and eventual need for application of botulinum toxin, preoperative pneumoperitoneum or component separation techniques. Despite the relevance of the findings, they are rarely described in CT scans as radiologists are not used to report findings of the AW as well as to know what information is really needed. For these reasons, we gathered a group of surgeons and radiologists to establish which information about the AW is important in a CT. Finally, a structured report is proposed to facilitate the description of the findings and their interpretation.

RESUMO Hérnias da parede abdominal são um problema bastante comum enfrentado pelo cirurgiões gerais. De diagnóstico essencialmente clínico, as hérnias abdominais durante muito tempo têm sido consideradas um problema de simples reparo. Entretanto, o acompanhamento de longo prazo dos pacientes têm demonstrado resultados desapontadores, tanto em termos de complicações quanto risco de recidiva da hérnia. Neste contexto, o planejamento pré-operatório com controle de comorbidades e pleno conhecimento da hérnia e suas relações anatômicas com a parede abdominal têm ganho cada vez mais atenção. A tomografia de abdome parece ser a melhor opção para determinar o tamanho e localização precisos das hérnias abdominais, presença de diastase de músculo reto e/ou atrofia da parede associada, assim como proporção da hérnia em relação a parede abdominal. Essas informações podem auxiliar o cirurgião na escolha da melhor técnica cirúrgica (aberta vs. MIS), posicionamento e fixação das telas, e eventual necessidade de aplicação de toxina botulínica, pneumoperitônio pré-operatório ou técnicas de separação de componentes. Apesar da relevância dos achados, eles são raramente descritos em exames de tomografia uma vez que os radiologistas não estão acostumados a olhar para a parede abdominal assim como não sabem quais as informações são realmente necessárias. Por estes motivos, nós reunimos um grupo de cirurgiões e radiologistas visando estabelecer quais são as informações da parede abdominal mais importantes em um exame de tomografia assim como propor um laudo estruturado para facilitar a descrição dos achados e sua interpretação.

Manejo quirúrgico de la hernia perineal primaria / Surgical management of primary perineal hernia

Las hernias perineales presentan una incidencia variable entre el 0,3-6 %. El abordaje quirúrgico se puede realizar por vía perineal o por vía laparoscópica. Se presentan las imágenes de una paciente con una hernia perineal adquirida primaria, tratada exitosamente mediante un abordaje mixto.

Perineal hernias present a variable incidence between 0.3-6%. The surgical approach can be performed perineally or laparoscopically. Images of a patient with a primary acquired perineal hernia, successfully treated using a mixed approach, are presented.

Hérnia Lombar Gigante de Grynfelt: Relato de Caso / Grynfelt's Giant Lumbar Hernia: Case Report

Hérnia lombar é definida como a extrusão de órgãos intra ou extraperitoneais através da descontinuidade da parede abdominal posterolateral. Corresponde a menos de 1% a 2% de todas as hérnias da parede abdominal, sendo poucos os casos descritos na literatura. Quando a hérnia ocorre no triângulo de Grynfelt, ela é definida como hérnia lombar superior. Uma vez que são incomuns na prática médica, podem ser confundidas com lipomas ou mesmo abscessos. Este artigo apresenta o caso de hérnia gigante de Grynfelt em um paciente do sexo masculino, submetido ao atendimento hospitalar inicial devido à dor lombar associada à massa palpável. Descoberto o diagnóstico, foi realizada incisão transversa no ápice da hérnia onde foi identificado o saco herniário e o trígono de Grynfelt. O reparo foi realizado por meio da colocação de uma tela de polipropileno com resultados satisfatórios. Reforça-se a importância do diagnóstico de uma afecção rara e a experiência do cirurgião para uma abordagem adequada.

Síndrome lumbocostovertebral. Reporte de un caso / Lumbocostovertebral syndrome. A case report

Introducción. El síndrome lumbocostovertebral es una anomalía poco frecuente, que afecta a los cuerpos vertebrales, las costillas y músculos de la pared abdominal, y puede estar asociada a múltiples anomalías congénitas. Requiere un manejo multidisciplinario y tratamiento quirúrgico temprano para evitar complicaciones. Caso clínico. Se reporta el caso de un neonato masculino de 10 días de edad, que presentó desde el nacimiento 2 tumoraciones lumbares derechas, una que aumentaba de tamaño con el llanto, correspondió a una hernia lumbar, y la otra, a mielomeningocele. En estudios complementarios se evidenció fusión de costillas, fusión de cuerpos vertebrales lumbares, sacros (hemivértebras) y defecto de pared abdominal con protrusión de contenido intestinal. Se realizó cierre de la hernia lumbar con refuerzo protésico de pericardio bovino, sin complicaciones. Conclusión. En defectos extensos, como el que se reporta en este paciente, puede ser recomendable emplear material protésico. El pericardio bovino aparece como una opción segura, bien tolerada y eficaz para estos pacientes en particular. Este síndrome es una entidad rara, que amerita un equipo multidisciplinario para la resolución quirúrgica temprana y con ello evitar complicaciones.

Introduction. Lumbocostovertebral syndrome is a rare anomaly that affects the vertebral bodies, ribs and muscles of the abdominal wall, and can be associated with multiple congenital abnormalities. It requires multidisciplinary management and early surgical treatment to avoid complications. Clinical case. The case of a 10-day-old male neonate is reported, who presented from birth 2 right lumbar tumors, one that increased in size with crying, corresponded to a lumbar hernia, and the other, to myelomeningocele. In complementary studies, rib fusion, fusion of lumbar and sacral vertebral bodies (hemivertebrae), and abdominal wall defect with protrusion of intestinal contents were evidenced. The lumbar hernia was closed with prosthetic reinforcement with a bovine pericardium, without complications. Conclusion. In extensive defects, such as the one reported in this patient, it may be advisable to use prosthetic material. The bovine pericardium appears as a safe, well tolerated and effective option for these patients in particular. This syndrome is a rare entity, which requires a multidisciplinary team for early surgical resolution and thus avoid complications.

New clues to understand gastroschisis. Embryology, pathogenesis and epidemiology / Nuevas pistas para comprender la gastrosquisis. Embriología, patogénesis y epidemiología

Abstract gastroschisis is a congenital structural defect of the abdominal wall, most often to the right of the umbilicus, through which the abdominal viscera protrude. Its developmental, etiological and epidemiological aspects have been a hot topic of controversy for a long time. However, recent findings suggest the involving of genetic and chromosomal alterations and the existence of a stress-inducing pathogenetic pathway, in which risk factors such as demographic and environmental ones can converge. . We have conducted a review of the medical literature that gathers information on the embryonic development of the ventral body wall, the primitive intestine, and the ring-umbilical cord complex, as well as on the theories about its origin, pathogenesis and recent epidemiological evidence, for which we consulted bibliographic databases and standard search engines

Resumen La gastrosquisis es un defecto estructural congénito de la pared abdominal, localizado con mayor frecuencia a la derecha del ombligo, a través del cual sobresalen las vísceras abdominales. Durante mucho tiempo, sus aspectos evolutivos, etiológicos y epidemiológicos han sido un tema candente de controversia, aunque hallazgos recientes sugieren la participación de alteraciones genéticas, cromosómicas, y la existencia de una vía patogénica inductora de estrés, en la que factores de riesgo como los demográficos y ambientales pueden converger. Con el objetivo de ampliar la frontera del conocimiento sobre una malformación que ha mostrado una creciente prevalencia global, hemos efectuado una revisión que incluye información, del desarrollo embrionario de la pared corporal ventral, el intestino primitivo, el complejo anillo-cordón umbilical, y de las teorías acerca de su origen, patogénesis e información epidemiológica reciente.

Between prolene®, ultrapro® and bard soft® meshes which presents the best performance in the repair of the abdominal wall? / Dentre as telas prolene®, ultrapro® ebard soft® qual apresenta melhor desempenho no reparo da parede abdominal?

ABSTRACT Background: In the definition of the mesh to be used to correct hernias, porosity, amount of absorbable material and polypropylene should be considered in the different stages of healing process. Aim: To evaluate the inflammatory reaction in the use of macro and microporous meshes of high and low weight in the repair of defects in the abdominal wall of rats. Methods: Ninety Wistar rats (Rattus norvegicus albinus) were used. The animals were submitted to similar surgical procedures, with lesion of the ventral abdominal wall, maintaining the integrity of the parietal peritoneum and correction using the studied meshes (Prolene®, Ultrapro® and Bard Soft®). Euthanasia was performed at 30, 60 and 120 days after surgery. The abdominal wall segments were submitted to histological analysis using H&E, Masson's trichrome, immunohistochemistry, picrosirius red and tensiometric evaluation. Results: On the 120th day, the tensiometric analysis was superior with Ultrapro® macroporous mesh. The inflammatory process score showed a significant prevalence of subacute process at the beginning and at the end of the study. Microporous meshes showed block encapsulation and in macroporous predominance of filamentous encapsulation. Conclusion: The Ultrapro® mesh showed better performance than the others in healing process of the abdominal wall.

RESUMO Racional: Na definição da tela a ser utilizada na correção das hérnias deve-se considerar a porosidade, quantidade de material absorvível e polipropileno ou inabsorvível nas diversas fases da cicatrização. Objetivo: Avaliar a reação inflamatória das telas macro e microporosas de alta e baixa gramatura no reparo de defeito da parede abdominal de ratos. Método: Foram utilizados 90 ratos da raça Wistar (Rattus norvegicus albinus). Os animais foram submetidos a procedimentos cirúrgicos semelhantes, com lesão da parede abdominal ventral, mantendo a integridade do peritônio parietal e correção utilizando as telas Prolene®, Ultrapro® e Bard Soft®. Realizou-se a eutanásia aos 30, 60 e 120 dias de pós-operatório. Os segmentos da parede abdominal foram submetidos à análise histológica com H&E, tricômio de Masson, imunoistoquímica, picrosirius red e análise tensiométrica. Resultado: No 120º dia a análise tensiométrica mostrou superioridade da tela macroporosa Ultrapro®. O escore do processo inflamatório demonstrou prevalência significativa de processo subagudo no início e no final do estudo. As telas microporosas mostraram encapsulamento em bloco e as macroporosas encapsulamento predominantemente filamentar. Conclusão: A tela Ultrapro® mostrou melhor desempenho em relação às demais na cicatrização da parede abdominal.

Re-recognition of endoscopic Sublay repair / 中华消化外科杂志

Repair of abdominal hernia is in dynamic evoluation.Laparoscopic intra-peritoneal onlay mesh (IPOM) and open Sublay repair are still the best methods for the repair of abdominal wall hernia. The application of component separation technique has further widened the indications of IPOM and Sublay repair for the treatment of large abdominal wall hernia. Endoscopic Sublay technique theoretically combines the advantages of open Sublay repair and laparoscopic IPOM repair, but it has the disadvantages of iatrogenic destruction of the tendon septum and normal mechanical deconstruction, which requires strict specification of indications and further research.