FDG Uptake by a Condylomata Acuminata in an HIV-Infected Patient Mimicked Urine Contamination

Scrotal Fibroepithelial Polyp With Acute and Chronic Inflammation Mimics Malignancy on 18F-FDG PET/CT Imaging

Computed tomography (CT) of a 68-year-old man showed multiple small nodules in the bilateral lungs (maximum 14 mm in the left upper lobe). CT-guided biopsy of left upper lobe lesion showed no tumor or granuloma. Fluorodeoxyglucose (FDG) PET/CT showed multiple nodules with background-to-mild FDG-avid activity, and an incidental left scrotal skin lesion with intensely increased accumulation of F-FDG (SUVmax, 11.7), suspected malignant. After urologist consultation, local dermatological findings suggested a huge wart. Excision was done, and pathology concluded nodular papillary fibroepithelial polyp with acute and chronic inflammation.

A Nodular Lesion of the Foot Detected by 18F-FDG PET/CT in Mycosis Fungoides: A Plantar Wart

A 34-year-old Japanese woman presented with widespread scaly erythema that had enlarged over 2 years. A skin biopsy revealed the diagnosis of mycosis fungoides (patch stage, T1b N0 M0 B0), a most frequent cutaneous T-cell lymphoma. F-FDG PET/CT scan unexpectedly showed intense uptake on the left sole, which suggested a tumorous mycosis fungoides lesion (SUVmax = 6.2). Careful examination revealed the mass to be a typical plantar wart of 2 cm in diameter that the patient had not recognized. With repeated cryotherapy, the wart disappeared in 6 months, and follow-up F-FDG PET/CT showed no abnormal uptake on the left sole.

The 18F-FDG PET/CT finding of a condyloma acuminata mimicking primary anorectal carcinoma in an HIV-infected patient

This case report describes a condyloma acuminata with intense FDG uptake mimicking primary anorectal carcinoma in an HIV-infected patient.A 44-year-old HIV-positive homosexual man with a history of lymphoma underwent an 18F-FDG PET/CT for restaging. A focal intense hypermetabolic lesion around the anorectal area was found by the PET/CT and it was suggested as a tumorous lesion. However, the lesion was not detected on the contrast-enhanced abdominal CT. Via a sigmoidoscopy, cauliflower-like masses were visualized in the intra-anal area. The tumor was surgically excised and proven to be condyloma acuminata by permanent pathology.