The immune destruction of bladder cancer most likely results from an interaction of specific and non-specific cellular and humoral responses evoked by tumor-associated antigens. We are just beginning to comprehend the complex immune mechanisms operating to retard or facilitate tumor growth in patients with this disease. This understanding has led to renewed hope that the immune system may be manipulated for the benefit of the tumor-bearing patient. However, only a thorough understanding of the basic functions of the immune system in man will permit a rational approach to immunotherapy in patients with bladder cancer.
