Use of an experimental model to evaluate infection resistance of meshes in abdominal wall surgery.

Background: Staphylococcal species are the most common organisms causing prosthetic mesh infections, however, infections due to rapidly growing mycobacteria are increasing. This study evaluates the resistance of biomaterial for abdominal wall prostheses against the development of postoperative infection in a rat model.

Material And Methods: In 75 rats, we intramuscularly implanted three different types of prostheses: (1) low-density polypropylene monofilament mesh (PMM), (2) high-density PMM, and (3) a composite prosthesis composed of low-density PMM and a nonporous hydrophilic film.

A simplified incision of the external oblique aponeurosis during the components separation technique for the repair of large incisional hernias.

Incising the external oblique muscle aponeurosis is an important part of the components separation technique for the repair of large incisional hernias. Endoscopically assisted section has been suggested to prevent complications of extensive skin flap formation. We used a simplified method for incising the external oblique aponeurosis, using a modified Collin Hartmann retractor, in 14 patients for the repair of large incisional hernias.

[Melanoma of the small intestine and adenocarcinoma of the colon].

The clinical case of a 73-years old male who was admitted for diarrhea and loss of weight is presented. Barium enema and colonoscopy demonstrated small size polyps in the sigmoid colon, one of which had a histologic diagnosis of adenocarcinoma. Abdominal examination detected a mass in the mesohypogastrium which did not appear to be related to the previous findings.