title: Clear cell mesothelioma of the testis with deciduoid areas--a case report.
abstract: We report a clear cell type of primary purely epithelial malignant mesothelioma with focal deciduoid features in the para-testis of a 75 year old man. This variant requires ancillary studies like immunohistochemistry for confirmation. Awareness of this variant is required to avoid misdiagnosis and treatment as either metastasis from a renal cell carcinoma or as a germ cell tumor. A diagnosis of mesothelioma must be ruled out in elderly patients with epithelial-looking tumor especially if the serum germ cell tumor markers are within normal range.
authors.affiliation: Department of Pathology, Tata Memorial Hospital, Parel, Mumbai Maharashtra.
authors.forename: Aparajita
authors.initials: A
authors.lastname: Mishra
authors.forename: Tanuja
authors.initials: T
authors.lastname: Shet
mesh_terms: D000368:Aged; D014408:Biomarkers, Tumor / Q000378:metabolism; D003937:Diagnosis, Differential; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D008654:Mesothelioma / Q000175:diagnosis / Q000378:metabolism / Q000473:pathology*; D013736:Testicular Neoplasms / Q000175:diagnosis / Q000378:metabolism / Q000473:pathology*; D000951:Antigens, Neoplasm
chemical_list: D014408:Biomarkers, Tumor; C432845:HBME-1 antigen; D000951:Antigens, Neoplasm