Recurrent hepatic hydatid disease or prior omentoplasty: diagnostic dilemma.

Endocystectomy combined with omentoplasty has become an accepted technique in the treatment of hydatid disease of the liver. Its attractiveness lies in its simplicity, its low frequency of postoperative biliary fistula, and the lack of specific complications related to the omentoplasty itself. However, radiological appearances after this procedure may be confusing. Two patients with upper abdominal pain are described in whom the radiological appearances of a previous omentoplasty could not be distinguished from a recurrent hydatid cyst.