[A Case of Concomitant Administration of Anti-Cancer Drug and Anti-Tuberculosis Drug for Pulmonary Tuberculosis Developed during Postoperative Chemotherapy for Gastric Cancer].

An 86-year-old man was referred to our hospital with pulmonary tuberculosis developed during postoperative chemotherapy for gastric cancer. We initiated treatment with an anti-tuberculosis drug. Following confirmation of the effectiveness of this regimen, we combined the treatment with anti-cancer drugs. Tuberculosis treatment was completed without any drug interactions or serious side effects due to multidrug administration. For cancer patients who developed tuberculosis, combination treatment requires careful observation; however, it is a treatment option that can control both diseases.