[Pathologic fluid collection of mesentery, differential diagnosis of mesenteric cysts - case report].

Mesenteric cyst is a pathologic fluid collection that very rarely occurs anywhere in the mesentery of the gastrointestinal tract from the duodenum to the rectum. The etiology of mesenteric cysts has not yet been completely understood. It ranges from tumorous, infectious, lymphatic and embryological to post-traumatic or post-operative origin. Symptoms of the illness are usually non-specific, caused mainly by intestinal obstruction. Diagnosis is often accidental. Therapy is exclusively surgical. In the following text, the authors present a case report of a 50-year-old patient operated on due to a mesenteric cyst. The patient had undergone bilateral nephrectomy for polycystic kidney disease and was followed up for polycystic liver disease. CT accidentally revealed a mesenteric cyst around 14 cm in size in the right meso-hypogastrium. It was necessary to perform its histological verification before the planned renal transplantation.