A rare cause of acute intestinal obstruction: Ileo-sigmoid knotting type IIA.

Ileosigmoid Knotting is a rare cause of intestinal obstruction which occurs as a consequence of ileum or sigmoid colon wrapping around the base of each other resulting in double closed-loop bowel obstruction. We report a case of a 52-year-old male who presented in the emergency department with sudden onset of abdominal pain and vomiting. On clinical examination, the abdomen was tender and distended.