Re-evaluation of hydrostatic pressure treatment for malignant bladder lesions.

We reviewed 50 cases of bladder cancer treated with the hydrostatic pressure technique. Results were encouraging when 1) single or multiple papillary tumors were not located around the ureteral orifice, with a presumed depth of tumor infiltration within T2, I) there was no history of open operations, 3) there was observed activity of immunological surveillance, for example a positive reaction to a tuberculin test, and 4) management of anesthesia was satisfactory. Hydrostatic pressure therapy is not palliative treatment for far-advanced cases of bladder cancers but should be the first choice for new cases beyond the scope for transurethral operations and when indications in tumor and host condition are satisfied.