Intraperitoneal involvement in rhabdomyosarcoma CT findings in a child.

Intraperitoneal neoplastic involvement in rhabdomyosarcoma is rare and its incidence and imaging characteristics need to be further described. We present the computerized tomography (CT) findings of a case with pelvic rhabdomyosarcoma and intraperitoneal neoplastic involvement. Enhanced peritoneal and retroperitoneal masses were seen around the liver, spleen, in the paracolic gutters, and in the lesser sac without evidence of ascites, mesenteric nodules or omental caking. Our case also showed that absence of ascites does not preclude the presence of peritoneal involvement. Progression in the peritoneal disease was also well demonstrated by CT.