Midline cyst of the prostate mimicking malignancy on FDG PET/CT.
A 58-years-old man underwent F-18 FDG PET/CT for health screening. F-18 FDG PET/CT revealed a focal, round, and 1.5 cm-sized hypermetabolic lesion at midline of the prostate. The lesion was suspected as a urinary activity or malignancy. On the review of medical records, it was found that the patient had undergone contrast-enhanced abdominal CT scan 1 day before PET/CT examination. On the attenuation-uncorrected image, the prostatic lesion was still evident. The lesion was considered as a midline cyst of prostate, communicating with urethra. It is suggested that radioactive urine remained in midline cyst resulting in the focal hypermetabolic lesion.
Kim
Dae-Weung
DW
Department of Nuclear Medicine, Wonkwang University School of Medicine, Iksan, Jeollabuk-do, Korea. akaxan@nate.com
Jung
Sang-Ah
SA
Park
Soon-Ah
SA
Kim
Chang Guhn
CG
D003560:Cysts / Q000175:diagnosis* / Q000000981:diagnostic imaging; D003937:Diagnosis, Differential; D019788:Fluorodeoxyglucose F18; D006801:Humans; D008297:Male; D008875:Middle Aged; D049268:Positron-Emission Tomography; D011471:Prostatic Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed
D019788:Fluorodeoxyglucose F18