Bladder Distention Demonstrating Vesicourachal Diverticulum on 18F-FDG PET/CT Images of a Lung Cancer Patient

<jats:title>Abstract</jats:title> <jats:p>A 58-year-old man with lung cancer was referred for an <jats:sup>18</jats:sup>F-FDG PET/CT scan for pretreatment staging. The FDG PET/CT scan revealed focal uptakes in the lower abdomen. We differentiated the etiology of the lesions by performing a delayed scan with urine retention and bladder distension. The delayed scan demonstrated a tubular, radioactivity-filled structure arising above the urinary bladder. Combining the FDG PET/CT scan, clinical findings, and ultrasonography, we made the diagnosis of vesicourachal diverticulum.</jats:p>