[Paraneoplastic syndromes in bronchogenic carcinomas].

During 5 years the authors followed up 35 patients with bronchogenic carcinomas. Of these, 34.3% had diverse paraneoplastic manifestations. The paraneoplastic reactions determined by ectopic production of different hormones and other substances as well as so-called "masks" of the systemic diseases are reviewed. An attempt is made to specify the basic mechanisms of the pathogenesis of each paraneoplastic sign.