[Broncho-pulmonary cancer associated with pulmonary tuberculosis. Report of 4 cases].

The association between bronchopulmonary carcinoma and pulmonary tuberculosis would not be fortuitous but related to increased susceptibility to opportunistic infections and tuberculosis in cancer patients. We present four cases demonstrating the gravity of the situation and the difficulties encountered in diagnosis and treatment. Diagnosis of tuberculosis in patients with bronchopulmonary carcinoma requires pathological evidence from histology biopsies or bacteriology samples. The diagnosis is further complicated in early stage neoplasms. In case of tuberculosis, surgical treatment of bronchopulmonary carcinoma may have to be postponed or even contraindicated. Inversely, chemotherapy and radiotherapy may favor extension of the tuberculosis.