title: FDG PET imaging in a patient with primary seminoma of the prostate.
abstract: Primary seminoma of the prostate is extremely rare. We describe a case of a 35-year-old man who presented with difficulty in urinating. Physical findings were unremarkable, but a rectal examination revealed a slightly hardened prostate with a nodule in the right lobe. Blood parameters were normal; however, blood chemistry revealed slightly elevated lactic dehydrogenase, and microscopic hematuria was evident. Serum prostate acid phosphate, carcinoembryonic antigen, and alpha-fetoprotein values were within normal limits. Both computed tomography and magnetic resonance images revealed a large mass in the prostate gland. A prostatic sarcoma or malignant lymphoma was initially suspected. A systemic survey using 18-fluoro-2-deoxyglucose (F-18 FDG) positron emission tomography revealed focal FDG uptake in the prostate gland. A prostatic biopsy of the mass was histologically diagnosed to reveal an extragonadal seminoma.
authors.affiliation: Department of Nuclear Medicine and Urology, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Ariake Kotoh-ku, Tokyo. kazu_52317hayasaka@hotmail.co.jp
authors.forename: Kazumasa
authors.initials: K
authors.lastname: Hayasaka
authors.forename: Masamichi
authors.initials: M
authors.lastname: Koyama
authors.forename: Iwao
authors.initials: I
authors.lastname: Fukui
mesh_terms: D000328:Adult; D019788:Fluorodeoxyglucose F18; D006801:Humans; D008297:Male; D049268:Positron-Emission Tomography; D011471:Prostatic Neoplasms / Q000000981:diagnostic imaging*; D018239:Seminoma / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed
chemical_list: D019788:Fluorodeoxyglucose F18