[Ligasure vs conventional diathermy in excisional haemorrhoidectomy: a retrospective study of a single center].

Introduction: Hemorrhoids are a prolapse of vasculopathic structures that cushion the anal canal and haemorrhoidectomy is the most effective treatment for grades III and IV In this retrospective study we compare the outcome after haemorrhoidectomy with Ligasure or with conventional diathermy.

Methods: From June 2005 to March 2009 we analyzed 75 patients affected by hemorrhoids (grades III and IV) who underwent haemorrhoidectomy in the University Hospital Arnau de Vilanova in Lleida. We evaluated the technique, the age and the sex, and compared the post-operative hospital stay, the post-operative pain and the complications with each of the techniques.

Complications of colonic diverticular disease. Comparative study of two series.

Objective: To compare the form of presentation and management of the disease in two surgical units covering geographically different populations.

Design: Observational retrospective study.

Patients And Method: 203 cases from the 2nd Chair of Surgery of the Hospital Universitario de Clínicas de Asunción, Paraguay and 150 cases from the Hospital Universitario de Lleida, Spain.

Repetitive mucosal trauma promotes colon cancer in experimental rat model.

Objective: To investigate the effect of repetitive mucosal trauma, anastomosis and intestinal content on experimental colonic carcinogenesis as there is the possibility than non-specific colon lesions can promote cancer.

Material And Method: We performed to sixty female Sprague-Dawley rats a 4 cm colon loop defunctionalization with double colostomy (traumatic site). Intestinal continuity was restored with an end-to-end colo-colic silk anastomosis.

Appearance of ear tumors in Sprague-Dawley rats treated with 1,2-dimethylhydrazine when used as a model for colonic carcinogenesis.

One of the models of colon carcinogenesis in rats is produced by s.c. injections of 1,2-dimethylhydrazine (DMH).