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Abnormal Congenital Peritoneal Bands: A Retrospective Cadaveric Study

ntroduction: Peritoneal folds are double layered peritoneal membranes produced during reflexion of peritoneum from viscera to the body wall or between adjacent viscera. They are named as ligaments, mesenteries, omentum etc. Sometimes during the course of development some abnormal peritoneal folds develop, which are of surgical importance because these folds or bands may constrict a part of intestine leading to obstruction and gangrene. These sometimes produce peritoneal recesses, which are the potential sites for internal herniation. Aim: To study abnormal peritoneal folds in cadavers. Materials and Methods: This was a descriptive study, conducted on 40 cadavers during August 2010-July 2020. Abdominal cavity was dissected and carefully observed for organisation of viscera and peritoneal reflexions in the abdominal cavity. Results: Out of 40 cadavers, congenital abnormal peritoneal bands were found in four cases and two cases had multiple peritoneal bands. Three cases had associated congenital abnormalities of the gut. One case of nonrotation of gut was observed, where small intestine was situated on the right side and colon on the left side. In this case, the ascending colon was fixed by a peritoneal band to right upper abdominal wall. In the second case, there was incomplete fusion of descending mesocolon. The mobile segment of descending colon was fixed by an abnormal peritoneal band. In the third case, there was absorption of pelvic mesocolon. Conclusion: Though the cause of development of abnormal peritoneal band is not very clear, this study shows that they may be present in cases of abnormal rotation or abnormal peritoneal fixation of gut.