[Double urologic tumors: reduced immunocompetence?].

55 patients with primary multiple neoplasias underwent immunostaging with determination of the immunoglobulins, B- and T-lymphocyte counting, H3-lymphocyte stimulation (ConA, PWM, PHA) and DNCB-epidermal test. There were no significant differences between the PMN-group and a group of patients with solitary tumors, whereas both cancer patient groups revealed a diminished immunocompetence compared with a non-malignant control group of patients.