Primary liposarcoma of the omentum: a case report and review of the literature.

A case of round cell liposarcoma of omentum in a 45-year-old man is reported. The patient presented with abdominal pain, swelling and fever of 4-month duration. Abdominal ultrasonography and computed tomogram confirmed the presence of an abdominal mass, but the omental origin of the tumour was revealed only on laparotomy. In addition to the main tumour mass, multiple nodules were present in the omentum. The tumour was excised with omentum. Histopathology of the tumour revealed a round cell liposarcoma. The patient expired 9 months after operation. Eight other cases of liposarcoma of omentum reported in English literature are reviewed.

Agenesis of gallbladder in symptomatic patients.

Three women and one man among 771 patients, who underwent laparotomy with diagnosis of symptomatic gallbladder disease over a period of 5 years, were found to have agenesis of the gallbladder. Preoperative ultrasonography suggested cholelithiasis in all the four patients; three patients with jaundice had choledocholithiasis in addition. The absence of gallbladder was established by meticulous operative exploration and carefully repeated ultrasonography in postoperative period. The patients having choledocholithiasis underwent choledocholithotomy, while the fourth patient had no definitive procedure. One patient expired on 17th postoperative day following biliary leak, septicemia and liver failure. Another two patients were well and symptom free, while the fourth patient remained symptomatic. Awareness of the possibility of agenesis of gallbladder may allow the surgeon to attempt confirmation of diagnosis by non-operative methods and avoid surgical exploration in specific instances.