18F-FDG PET/CT Imaging of Epididymal Smooth Muscle Mass Mimicking Recurrent Lymphoma.
An 84-year-old man with a history of diffuse large B-cell lymphoma in remission who had completed chemotherapy 3 years previously was referred for imaging evaluation of disease recurrence. Abnormal accumulation in the left scrotum was demonstrated on F-FDG PET/CT. Subsequent ultrasonography showed a nodular mass lesion in the left epididymis. He then underwent left orchiectomy. Histopathological examination of the mass diagnosed smooth muscle hyperplasia/hamartoma of the left epididymis. Epididymal smooth muscle hyperplasia/hamartoma should be included as a differential diagnosis for malignant scrotal tumor.
From the Department of Nuclear Medicine, Kawasaki Medical School, Kurashiki, Okayama, Japan.
Shogo
S
Takeuchi
Masayuki
M
Inubushi
Kiyohisa
K
Nagai
Teruki
T
Sone
D000369:Aged, 80 and over; D003937:Diagnosis, Differential; D004822:Epididymis / Q000000981:diagnostic imaging* / Q000473:pathology; D019788:Fluorodeoxyglucose F18; D006222:Hamartoma / Q000000981:diagnostic imaging* / Q000473:pathology; D006801:Humans; D016403:Lymphoma, Large B-Cell, Diffuse / Q000000981:diagnostic imaging*; D008297:Male; D009130:Muscle, Smooth / Q000000981:diagnostic imaging / Q000473:pathology; D000072078:Positron Emission Tomography Computed Tomography; D019275:Radiopharmaceuticals
D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18