From this anecdotal case we suggest that diuretic intervention can be a useful measure to elucidate unusual urinary retention in renal regions noticed on FDG PET.

• 该病患随后接受超音波检查、利尿肾图及肾皮质摄影显示右肾内一正常变异造成肾间质向肾内突出可能是导致影像异常之主因。