A 60-year-old woman is found to have a 6 cm mass in her greater omentum. The most likely diagnosis is
b. Omental cysts are far less common than mesenteric cysts.
c. Omental cysts may present as an asymptomatic abdominal mass, or it may cause abdominal pain or distention.
d. Physical examination reveals a freely mobile intra-abdominal mass.
e. Both computed tomography and abdominal ultrasound reveal a well-circumscribed, cystic-mass lesion arising from the greater omentum.
f. Treatment involves resection of all symptomatic omental cysts.
b. Benign tumors of the omentum include lipomas, myxomas, and desmoid tumors.
c. Because the omentum is derived from mesoderm, primary malignant tumors of the omentum are liposarcomas, leiomyosarcomas, rhabdomyosarcomas, fibrosarcomas, and mesotheliomas.
d. Metastatic tumors involving the omentum are quite common.
e. Metastatic ovarian tumors have a high preponderance of omental involvement.
f. Malignant tumors of the stomach, small intestine, colon, pancreas, biliary tract, uterus, and kidney may also metastasize to the omentum