A 67-year-old female was referred to our hospital with the chief complaint of genital bleeding. Physical examination revealed a thumb's-head-sized tumor at the external urethral meatus. Histopathological examination of the biopsy specimen suggested papillary carcinoma. She underwent partial urethrectomy with negative surgical margins. The final pathological diagnosis of the tumor was papillary adenocarcinoma, of Stage A according to Grabstald's classification. She is alive with no evidence of recurrence at 5 months after surgery.