Three pathologically proven cases of malignant peritoneal mesothelioma
(MPM) are shown with markedly different computed tomographic (CT) app
earances. The first presented as a large enhancing pancreatic mass, a
second with diffuse solid large intraperitoneal masses enveloping bowe
l and mesentery, and a third with predominance of ascites and small pe
ritoneal nodules. In only one patient was there a history of possible
asbestos exposure. The CT findings, pathology, and differential diagno
sis of MPM are discussed.