In the absence of any pathological condition in the pelvis of children who
present with acute abdomen, the observation of serosanguineous intraabdomin
al 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 wa
s later diagnosed during a laparotomy to have primary torsion of the omentu
m, is reported, Obesity, exercise, and the presence of a bifid omentum were
confirmed to be the predisposing factors.