以切除包括膀胱三角区及周围组织、前列腺、精囊、下端输尿管的下半膀胱的方法，为8例位于三角区和膀胱颈部的多发或浸润性肿瘤病人施行手术。手术方法：病人取仰卧位，腰骶部垫高，或将手术台首尾下降，以扩大耻骨联合与脐部的距离。插气囊尿管，气囊内充水30ml，并经尿管注入 Eight patients with multiple or invasive tumor located in the triangle and bladder neck underwent surgery by excision of the lower half of the bladder, including the trigone and surrounding tissues, the prostate, the seminal vesicle, and the lower ureter. Surgical methods: patients supine position lumbosacral lifts, or the end of the operating table down to expand the pubic symphysis and umbilical distance. Plug the balloon catheter, the balloon filled with water 30ml, and the catheter