A Rare Presentation of Mass Abdomen

An elderly male who had undergone inguinal hernia surgery eight years back presented with an intra-abdominal mass. Clinically and radiologically it was diagnosed as mesenteric cyst. Laparotomy revealed a thick walled cyst embedded in the omentum, containing brownish necrotic material and few ‘linen thread knots’. On the basis of the latter finding the mass was thought to be a walled off hematoma, a complication of previous hernia surgery. Such a complication of inguinal surgery has not been reported earlier.