Meckel's diverticulum-rare complications and review of the literature.

Meckel's diverticulum is the most common congenital anomaly of the gastro-intestinal tract. It arises as a result of incomplete dissolution of the vitello-intestinal duct. Approximately 4% of patients with Meckel's diverticula develop complications, most commonly obstruction, gastro-intestinal bleeding and inflammation. We describe three unusual presentations of Meckel's diverticulum-perforation due to ingested foreign body, a smooth muscle neoplasm simulating an ovarian tumour, and a Littre's hernia.