title: Peritoneal lymphomatosis mimicking peritoneal carcinomatosis: important imaging clues for correct diagnosis.
abstract: Peritoneal lymphomatosis, a rare presentation of lymphoma, can mimic peritoneal carcinomatosis. Computed tomography findings in both conditions include omental caking, as well as peritoneal enhancement, thickening and nodularity. We report three cases of peritoneal lymphomatosis and give an analysis of the salient imaging features that aided in the accurate diagnosis of the condition in each case. Two of the three cases demonstrated elevated serum cancer antigen 125 levels, a marker commonly associated with ovarian carcinoma. It is thus critical to distinguish peritoneal lymphomatosis from carcinomatosis, as the prognosis and management are dramatically different.
authors.affiliation: Department of Diagnostic Imaging, National University Hospital, 5 Lower Kent Ridge Road, Singapore. davidssy@yahoo.com
authors.forename: David Soon Yiew
authors.initials: DS
authors.lastname: Sia
authors.forename: Jeevesh
authors.initials: J
authors.lastname: Kapur
authors.forename: Yee Liang
authors.initials: YL
authors.lastname: Thian
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D018394:CA-125 Antigen / Q000097:blood*; D002277:Carcinoma / Q000175:diagnosis* / Q000000981:diagnostic imaging; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008223:Lymphoma / Q000175:diagnosis* / Q000000981:diagnostic imaging; D008297:Male; D010534:Peritoneal Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging; D010537:Peritoneum / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed
chemical_list: D018394:CA-125 Antigen