OKUYAMA, S., MISHINA, H. and NUNOKAWA, T. Medroxyprogesterone Acetate for Lung Cancer. Tohoku J. Exp. Med., 1990, 161 (2), 153-154-A 70-year-old man having severe ischemic heart diseases developed bilateral, duplicate lung cancer of large cell and squamous cell types. Chemoimmunotherapy consisting of carmofur, picibanil inhalation, i.m. sizofilan, and peroral bestatin was started, and 3 months later, peroral mdroxyprogesterone acetate was added. The tumor regressed, and the patient survived more than 34 months. This type of non-aggressive regimen may thus be useful for tumors other than adenocarcinomas, too.