Cell-mediated immunity in patients with renal adenocarcinoma.

The lymphocytotoxicity test was used to study the existence of immunologically active lymphocyte reactions in patients with renal carcinoma at different stages. In 9 patients with an advanced renal carcioma (stage IV) a low lymphocytotoxicity was found, while the examination of 7 patients with stage I and II renal tumours showed a high value of the lymphocytotoxicity test. The clinical importance of the lymphocytotoxicity test is discussed with special interest in a possible immunotherapy.