Transanal evisceration caused by rectal laceration.

Transrectal evisceration caused by colorectal injury is an unusual entity. This pathology is more frequent in elderly patients and it is usually produced spontaneously. Rectal prolapse is the principal predisposing factor.

[Laparoscopic treatment of acute gastric volvulus].

Introduction: Gastric volvulus is an uncommon clinical condition and is associated with type ii-iii hiatal hernias. Its acute presentation constitutes a surgical emergency. Despite its low frequency, results of laparoscopic treatment have already been published.

[Mucocele of the appendix: Presentation of 31 cases].

Unlabelled: Mucocele of the appendix is a very uncommon disease estimated to be seen in 0.2-0.3% of all appendectomies (0.

Assisted laparoscopic transhiatal esophagectomy for the treatment of esophageal cancer.

Background: Esophageal resection for the treatment of esophageal cancer is usually associated with high morbido-mortality risks, that can be reduced using laparoscopy. Laparoscopic transhiatal esophagectomy (LTE) has the potential to improve these results but, to-date, only a few limited series of cases have been reported. This report summarizes our experience in 24 cases.

Effects of dopamine in isolated rat colon strips.

The aim of the present work is to investigate the effects of dopamine on isolated rat colon strips, and whether dopamine receptors are involved in these effects. Experiments on spontaneous motility and under potassium contraction were performed with dopamine and isoprenaline, both in the absence and presence of antagonists (distal colon strips, isotonic recording, Tyrode solution, 31 degrees C, 1 g of resting tension). At higher concentration (10(-4) mol/L), dopamine abolished spontaneous motility of the rat colon and this effect was not modified by antagonists.