膀胱之嗜鉻細胞瘤是罕見的膀胱腫瘤，其比例約為所有膀胱腫瘤的萬分之六。典型的症狀為血尿且在解尿時出現高血壓危象。傳統治療以膀胱部分切除為主。在此我們報告一個以下泌尿道症狀及巨觀性血尿表現但缺乏高血壓危象之病例。膀胱腫瘤採取經尿道逆行性切除，手術時未發現血壓之變化。在此並回顧膀胱嗜鉻細胞瘤之臨床症狀，診斷、治療及追蹤。

A urinary bladder pheochromocytoma is a rare tumor that typically presents with a hypertensive crisis during micturition. We report on a bladder pheochromocytoma in a normotensive 65-year-old male with lower urinary tract symptoms and gross hematuria. A bladder tumor was found by cystoscopy. A pheochromocytoma was not included among the preoperative differential diagnoses due to lack of hypertension at presentation. The bladder tumor was resected transurethrally, and the pheochromocytoma was diagnosed by pathological examination. No change in blood pressure was noted intraoperatively. The clinical symptoms, diagnosis, and treatment of bladder pheochromocytomas are reviewed.