Primary torsion of the omentum in a 6-year-old boy: report of a case.

In the absence of any pathological condition in the pelvis of children who present with acute abdomen, the observation of serosanguineous intraabdominal fluid should prompt the surgeon to investigate the omentum. A 6-year-old boy who was admitted with a clinical picture of acute appendicitis, and was later diagnosed during a laparotomy to have primary torsion of the omentum, is reported. Obesity, exercise, and the presence of a bifid omentum were confirmed to be the predisposing factors.