title: Renal oncocytoma mimicking hemorrhagic renal cyst.
abstract: A case of oncocytoma, the radiological findings of which resembled a hemorrhagic renal cyst, is reported. Cyst fluid analysis demonstrated extremely high levels of carcinoembryonic antigen (CEA) and carbohydrate antigen 19-9 (CA19-9). Preoperatively the lesion was regarded a malignant cyst, and radical nephrectomy was performed. Pathological diagnosis was renal oncocytoma with cystic degeneration. Although cystic change occasionally has been mentioned in oncocytoma, a high level of CEA and CA 19-9 in the cyst fluid of the cystic oncocytoma have not been reported. We discuss the variant forms of oncocytoma and tumor markers in the cyst fluid.
authors: Department of Urology, University of Tsukuba, Japan.
authors: N
authors: N
authors: Sekido
authors: K
authors: K
authors: Kawai
authors: H
authors: H
authors: Takeshima
authors: H
authors: H
authors: Akaza
authors: K
authors: K
authors: Koiso
mesh_terms: D018249:Adenoma, Oxyphilic / Q000737:chemistry / Q000175:diagnosis*; D015295:Antigens, Tumor-Associated, Carbohydrate / Q000032:analysis; D014408:Biomarkers, Tumor / Q000032:analysis; D002272:Carcinoembryonic Antigen / Q000032:analysis; D003937:Diagnosis, Differential; D006470:Hemorrhage / Q000175:diagnosis* / Q000209:etiology; D006801:Humans; D052177:Kidney Diseases, Cystic / Q000150:complications / Q000175:diagnosis*; D007680:Kidney Neoplasms / Q000737:chemistry / Q000175:diagnosis*; D008297:Male; D008875:Middle Aged; D014057:Tomography, X-Ray Computed
chemical_list: D015295:Antigens, Tumor-Associated, Carbohydrate; D014408:Biomarkers, Tumor; D002272:Carcinoembryonic Antigen