After a meticulous survey, metastatic carcinoma of the urinary bladder from the lung was diagnosed despite an initial normal appearance of the bladder mucosa on cystoscopy.

• 虽然最初膀胱镜检查呈现正常膀胱黏膜外观，经过仔细的检查判断，诊断出是一个肺癌之膀胱转移的病人。