Descending colon volvulus in a patient with persistent left mesocolon: A case report.

Persistent descending mesocolon is a congenital anomaly in which the mesentery of the descending colon fails to fuse with the retroperitoneum, resulting in a mobile colon that is suspended by a mesentery extending from the left upper quadrant to the pelvic brim. This can predispose to intestinal obstruction by twisting of the colon, internal hernia with or without a mesenteric defect or intussusception. We present a case report of a 30-year-old male who presented with recurrent abdominal pain and distension, with a CT diagnosis of descending colonic volvulus due to persistent left mesocolon. The patient underwent a successful resection of the affected colon and had an uneventful recovery. This case highlights the importance of considering anatomical variants in the diagnosis and management of colonic volvulus.