The coexistence of pulmonary tuberculosis and carcinoma of the lung was reported infrequently prior to 1940,1 and rarely were these two diseases diagnosed simultaneously before death. Cooper,2 in an exhaustive study of the literature prior to 1932, found only 45 cases of combined tuberculosis and carcinoma of the lung. During the last two decades, there has been a rapid rise in the incidence of bronchial carcinoma so that these tumors are now the most frequent form of malignant disease causing death among adult males. During the same period, there has been a shift in the age incidence of patients with pulmonary tuberculosis so that an even greater percentage are now found alive beyond the age of 40. The use of antituberculous chemotherapy and pulmonary resections will probably further increase the number of tuberculous patients surviving to an age where cancers are not uncommon.
In the past 20 years, a total