Use of hyaluronidase cream to prevent peritoneal adhesions in laparoscopic ventral hernia repair by means of intraperitoneal mesh fixation using spiral tacks.

BACKGROUND: The aim of this study was to investigate the effects of hyaluronidase gel on the prevention of post-operative peritoneal adhesions to prosthetic materials used in laparosopic ventral hernia repair. METHODS: Ten pigs were included in this study. The animals were anesthetized using Na-penthotal for induction and isofluorane for maintenance. The abdomen was opened and, using helical fasteners, four implantations were performed (squares of 4 x 4 cm). Two of the implants, placed in an upper location, were in polypropylene mesh, and two of the implants, placed in a lower area, were in polytetrafluoroethylene (PTFE-e, Dualmesh Plus Corduroy). The implants located in the right side of animals were painted with hyaluronidase gel. Two helical fasteners, painted and unpainted, were implanted in a medial location. After a five-week period the pigs were operated on again, intraperitoneal adhesion ratios and grades were determined, and the pigs later sacrificed. Specimens having abdominal wall implants were taken for histological studies. RESULTS: Intraperitoneal adhesions decreased in implants painted with hyaluronidase gel in a comparative study with implants located in the left side of animals (not painted). On the other hand the polypropylene mesh, said typically to produce intraperitoneal adhesions, produced almost no adhesion in many animals. CONCLUSIONS: Hyaluronidase gel reduces post-operative peritoneal adhesions ratio and grades including in the presence of polypropylene mesh.

'Sandwich' technique in the treatment of large and complex incisional hernias.

BACKGROUND: Reconstruction of large, complex abdominal wall hernias is an interesting challenge. Primary closure of those hernias is often not possible. There is little agreement about the most appropriate technique or prosthetic to repair these defects, in spite the fact of the prevalence of ventral hernias. Sometimes despite being contaminated surgical fields, we are often faced to reinforce with bio-prosthetic meshes. The component separation technique (CST) is a practical option; however, recurrence rates remain unacceptably high. In an attempt to reduce recurrences, we frequently added a biologic underlay mesh and a lightweight polypropylene on-lay mesh to the traditional CST. Our objective was to determine biologic mesh practice patterns of reconstructive surgeons with regard to indications, most appropriate technique, choice of prosthetics and experience with complications in order to work those hernias out. METHODS: Thirty consecutive patients who underwent abdominal wall reconstruction by means of a component separations associated with non-cross-linked porcine dermal scaffolds (NCPDS) or a synthetic tissue scaffold (STS) reinforcement between October 2009 and December 2011 were retrospectively reviewed. Analysis of demographics, indications for NCPDS or STS placement, surgical technique, complications and follow-up data were performed. They underwent a 'sandwich' procedure with a biologic underlay mesh and a lightweight polypropylene on-lay mesh added to the traditional CST. We chose NCPDS or STS underlay mesh according to the fact of the presence or absence of a contaminated field. RESULTS: A 'sandwich' procedure was used for abdominal wall repair in 30 patients. In all of them, NCPDS or STS was positioned using an intraperitoneal technique associated to a lightweight polypropylene on-lay mesh and the CST. At a mean follow-up time of 30.1 months, most patients had successful outcomes. Occurrences included seroma, recurrence and infection. One of our patients died from multi-organ failure unrelated to hernia repair. CONCLUSIONS: This study shows that complex abdominal wall defects can be successfully reconstructed using a 'sandwich' procedure with a low rate of recurrence and occurrences. Moreover, repair of large, complex abdominal wall hernias by CST augmented with a biologic underlay mesh and a lightweight polypropylene on-lay mesh results in lower recurrence rates compared with historical reports of CST alone.

Eventración uterina en paciente gestante / Uterine incisional hernia in a pregnant patient

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[Appendiceal carcinoid tumors. Evaluation of long-term outcomes in a tertiary level]. / Tumores carcinoides apendiculares. Evaluación de los resultados a largo plazo en un hospital de tercer nive.

BACKGROUND: Appendiceal tumors are found in about 1% of appendectomies performed and 0.5% of intestinal neoplasias. Appendiceal carcinoids are the predominant histology in this group and are usually casual after appendectomy for other reasons. The prognosis is excellent and survival is 95% at 5 years after surgery. METHODS: Retrospective analysis of all patients with appendiceal carcinoid surgery in our hospital for 20 years (1990-2010) and survival at 5 years. We also discuss the need for additional treatment and testing for follow-up visits. RESULTS: 42 patients underwent surgery for appendiceal carcinoid tumor. 38 of them were operated on urgently, mostly for suspected acute appendicitis, without having reached the carcinoid tumor diagnosed preoperatively in any of them. The predominant symptomatology at admission was abdominal pain. Surgical treatment was appendectomy in 34 patients (12 laparoscopic), 7 patients required colon resections over intraoperatively by colonic involvement; only one patient required reoperation to complete right hemicolectomy. 2 patients had disseminated disease at diagnosis (liver metastases). The 5-year survival is over 95%, with no recurrence. CONCLUSIONS: The appendiceal carcinoid tumor is difficult to diagnose preoperatively. Appendectomy surgical treatment is usually sufficient, although colonic resections may be needed for dissemination. The 5-year survival is over 95%.

Antecedentes: los tumores apendiculares se encuentran en cerca de 1% de las apendicectomías y representan 0.5% de las neoplasias intestinales. El tipo de tumor más frecuente es el carcinoide apendicular, que casi siempre es un hallazgo durante la apendicectomía por otro motivo. Su pronóstico es excelente y la supervivencia es mayor de 95% a cinco años de la intervención. Objetivo: reportar una serie de casos y analizar la supervivencia media a cinco años posteriores a la identificación el tumor. Material y métodos: análisis retrospectivo (1990-2010) de pacientes con tumor carcinoide apendicular intervenidos en el servicio de Cirugía General y del Aparato Digestivo del Hospital Universitario Virgen del Rocío, Sevilla, España. Se analizaron: la supervivencia a cinco años, la necesidad de tratamiento complementario y las pruebas para seguimiento en la consulta. Resultados: se encontraron 42 pacientes intervenidos por tener un tumor carcinoide apendicular. En 38 pacientes la operación fue de urgencia, la mayoría por sospecha de apendicitis aguda, sin que en ninguno se hubiera establecido el diagnóstico de tumor carcinoide antes de la operación. El síntoma predominante al ingreso fue el dolor abdominal. El tratamiento quirúrgico fue: apendicectomía en 34 pacientes (12 por laparoscopia), en el intraoperatorio siete pacientes requirieron resecciones colónicas mayores debido a la afectación del colon; sólo uno requirió la reintervención para completar la hemicolectomía derecha. Al momento del diagnóstico dos pacientes tenían enfermedad diseminada (metástasis hepáticas). La supervivencia a cinco años fue superior a 95%, sin recidivas o tratamiento posterior de la enfermedad. Conclusiones: el tumor carcinoide apendicular difícilmente se diagnostica antes del procedimiento quirúrgico. La apendicectomía suele ser suficiente aunque en algunos pacientes las resecciones colónicas son necesarias por diseminación. La supervivencia a 5 años es superior a 95%.

Malignant degeneration in pilonidal disease.

BACKGROUND: Pilonidal disease is one of the most frequent entities in our daily surgical activity. Although it is a benign disease, malignant degeneration is likely to occur in pilonidal disease. We reviewed surgical interventions for pilonidal diseases performed from January 1, 1995 to December 31, 2008. CLINICAL CASE: We reviewed all 3729 histology reports obtained after surgical removal of pilonidal disease. There were three cases of squamous cell carcinoma and one case of basal cell carcinoma. Patients affected by squamous cell carcinoma had a mean age of 54.2 years and a mean time of evolution of the lesions of 20.6 years. We found local recurrence and lymph node recurrence. Mean follow-up period was 5 years and there was no mortality. The patient with basal cell carcinoma had 1 year of pilonidal disease evolution. There were no recurrences. CONCLUSIONS: Malignancy can arise in pilonidal diseases with a long evolution time. There is a high rate of recurrence and morbimortality in cases of squamous cell carcinomas. Adjuvant radiotherapy in addition to complete local excision has demonstrated a decrease in the rate of local recurrence.

Role of fibrin glue in the prevention of peritoneal adhesions in ventral hernia repair.

PURPOSE: The aim of this study was to investigate the effects of fibrin glue on the prevention of postoperative peritoneal adhesion to prosthetic materials used in ventral hernia repair. METHODS: Ten pigs were included in this study. The abdomens of the animals were opened by means of a median subumbilical laparotomy to place four prostheses that were cut into square pieces of 4 x 4 cm. The two prostheses in the most cephalic position were polypropylene meshes, and the other two prostheses in a more caudal position were expanded polytetrafluoroethylene prostheses (Dualmesh Plus Corduroy). The prostheses on the right side of each animal were previously impregnated with fibrin glue. After 5 weeks, the animals were reoperated on to assess the quantity and quality (consistency) of the adhesions. RESULTS: There were fewer intraperitoneal adhesions and they were more labile in the case of prostheses impregnated with fibrin glue. Moreover, we also observed that in many of the animals the polypropylene mesh did not show any adhesions, although polypropylene has been considered to be a typical adhesion producing material. CONCLUSIONS: Fibrin glue reduces both the quantity and consistency of adhesions, even in the case of polypropylene meshes.

[Prevention of peritoneal adhesions to intraperitoneal prostheses. An experimental study in pigs]. / Prevención de adherencias peritoneales a las prótesis intraperitoneales. Estudio experimental en cerdos.

INTRODUCTION: The aim of this study was to investigate the effect of fibrin glue and hyaluronidase gel on the prevention of postoperative peritoneal adhesions to intraperitoneal prostheses. MATERIAL AND METHOD: Twenty pigs, divided in two groups, were included. In all animals, four implants (4 x 4 cm) were placed: two polypropylene mesh implants were placed in an upper location and two polytetrafluoroethylene (PTFE) implants (Dualmesh Plus Corduroy) were placed in a lower position. Implants located in the right side of the animals were painted with fibrin glue (group A, n = 10) or with hyaluronidase gel (group B, n = 10). After 5 weeks, the animals were sacrificed and the results (number and grade of intraperitoneal adhesions, histological data on prosthesis integration, such as mesothelialization, fibroblast infiltration, vessel neoformation, etc.) were evaluated. RESULTS: Intraperitoneal adhesions decreased in implants painted with fibrin glue and hyaluronidase gel compared with untreated implants. When right-sided adhesions formed, they were looser and in many animals, the implants were completely peritonized. Integration of the prostheses was not affected by either fibrin glue or hyaluronidase gel. CONCLUSIONS: Adhesion formation can be reduced after abdominal surgery. The reduction achieved in this study was greater in the quantity than in the consistency of the adhesions. The results with hyaluronidase gel were moderately superior to those obtained with fibrin glue. Hyaluronidase gel has the advantage of being inexpensive.

Fijación con sutura frente a sellante de fibrina en hernioplastia con prótesis reabsorbible (ácido poliglicólico y carbonato trimetileno). Estudio experimental en animales / Mesh fixation with sutures versus fibrin sealant in hernioplasty with re-absorbable prosthesis (polyglycolic acid and trimethylene carbonate). Experimental study in animals

Introducción Dado que estudios actuales han mostrado la validez de la fijación atraumática con cola de fibrina (Tissucol®) frente a las suturas convencionales con malla de polipropileno, en este trabajo se quiere estudiar el comportamiento en las mallas reabsorbibles. Material y métodos Se utilizaron 20 ratas blancas Wistar. Se realizaron 2 defectos herniarios en la pared abdominal, que se repararon de forma preperitoneal con malla reabsorbible de ácido poliglicólico y carbonato trimetileno, en el lado de la derecha la malla se fijó con Tissucol® y en el lado de la izquierda se fijó con sutura convencional fijada a la fascia muscular. Se sacrificaron 10 ratas a los 14 días (serie A) y el resto a los 28 días (serie B). Se emplearon para comprobar la contingencia de la pared abdominal 2 test; el test de presión: neumoperitoneo mayor de 40mmHg mantenido durante 1min, y el test de tracción: dinamometría de la zona afectada mayor de 300g de tracción por cm2. Se analizó la pared abdominal para determinar la integración de la malla de nueva generación. Resultados La fijación de la malla tras los test de presión y de tracción no evidenció alteraciones estadísticamente significativas en los 2 grupos. La integración de la malla fue mayor en los casos de fijación con cola de fibrina, donde se observó un aumento del número de neovasos. Conclusiones La fijación con colas biológicas de fibrina equiparó a la convencional. La malla reabsorbible se integró adecuadamente y se comprobó que tanto la neoformación vascular como la propia integración de la malla es más notable al aplicar el sellante de fibrina que con la sutura convencional. (AU)

Introduction Current studies have shown the validity of the atraumatic fixation with fibrin glue (Tissucol®) compared to conventional sutures in polypropylene mesh fixation. We propose to study the behaviour of absorbable mesh. Material and methods We used 20 Wistar white rats. Two hernia defects were made in the abdominal wall, which were repaired using absorbable PGA-TMC preperitoneal mesh. The right side of the mesh was fixed with Tissucol and left side with conventional suture attached to the muscle fascia. One group of 10 rats were sacrificed at day 14 (Series A) and the other 10 rats at 28 days (Series B). We used two tests to assess the contingency of the abdominal wall; Pressure Test: pneumoperitoneum more than 40mmHg maintained for 1min, Traction Test: dynamometry of the affected area more than 300mg per cm2 of traction. Abdominal wall was analysed to determine the integration of the new generation mesh. Results The fixation of the mesh after the pressure and traction tests showed no statistically significant changes in either group. The integration of the mesh and vessel neoformation was higher in the cases of fixation with fibrin glue. Conclusions Biological fixation with fibrin glue is similar to the conventional. Absorbable mesh was suitably integrated and vascular neoformation and integration of the mesh was also found to be better than conventional sutures when fibrin sealant was applied (AU)

Prevención de adherencias peritoneales a las prótesis intraperitoneales. Estudio experimental en cerdos / Prevention of peritoneal adhesions to intraperitoneal prostheses. An experimental study in pigs

Introducción. El objetivo de este estudio es investigar el efecto de la cola de fibrina y del gel de hialuronidasa en la prevención de adherencias peritoneales a las prótesis intraperitoneales. Material y método. En este estudio hemos utilizado 20 cerdos, divididos en 2 grupos: en todos los animales se procedió a colocar implantes de 4 x 4 cm: 2 de malla de polipropileno en una posición más cefálica, y otros dos de politetrafluoroetileno (Dualmesh® Plus Corduroy) en una posición más caudal. Los implantes situados en el lado derecho del animal se impregnaron de inhibidores de la producción de adherencias (en 10 animales se utilizó cola de fibrina, serie A, y en otros 10 se utilizó gel de hialuronidasa, serie B). Después de 5 semanas, se procedió al sacrificio de los animales y se evaluaron los resultados (cantidad y calidad de las adherencias formadas, así como datos histológicos de integración de las prótesis, como mesotelización infiltración por fibroblastos, vasos neoformados, etc.). Resultados. Al cabo de 5 semanas se apreciaba que los implantes impregnados de sustancias inhibidoras de la producción de adherencias presentaban menos adherencias, éstas (cuando existían) eran más laxas, e incluso en muchos casos los implantes estaban perfectamente peritonizados. La integración de las prótesis no estaba afectada por la presencia de los inhibidores. Conclusiones. La formación de adherencias puede disminuirse tras la cirugía abdominal. La disminución conseguida es mayor en la cantidad que en la consistencia de adherencias. Los resultados son algo mejores en la serie en la que se utilizó hialuronidasa que en la que se utilizó cola de fibrina. La hialuronidasa tiene la ventaja de tener un menor coste (AU)

Introduction. The aim of this study was to investigate the effect of fibrin glue and hyaluronidase gel on the prevention of postoperative peritoneal adhesions to intraperitoneal prostheses. Material and method. Twenty pigs, divided in two groups, were included. In all animals, four implants (4 x 4 cm) were placed: two polypropylene mesh implants were placed in an upper location and two polytetrafluoroethylene (PTFE) implants (Dualmesh Plus Corduroy) were placed in a lower position. Implants located in the right side of the animals were painted with fibrin glue (group A, n = 10) or with hyaluronidase gel (group B, n = 10). After 5 weeks, the animals were sacrificed and the results (number and grade of intraperitoneal adhesions, histological data on prosthesis integration, such as mesothelialization, fibroblast infiltration, vessel neoformation, etc.) were evaluated. Results. Intraperitoneal adhesions decreased in implants painted with fibrin glue and hyaluronidase gel compared with untreated implants. When right-sided adhesions formed, they were looser and in many animals, the implants were completely peritonized. Integration of the prostheses was not affected by either fibrin glue or hyaluronidase gel. Conclusions. Adhesion formation can be reduced after abdominal surgery. The reduction achieved in this study was greater in the quantity than in the consistency of the adhesions. The results with hyaluronidase gel were moderately superior to those obtained with fibrin glue. Hyaluronidase gel has the advantage of being inexpensive (AU)