Abstract
A man, 74-years-old, was diagnosed as pulmonary tuberculosis based upon the chest x-ray films showing the presence of the cavities in both upper lung fields and AFB in his sputum.
With chemotherapy, the cavities disappeared and sputum culture for AFB became negative after six months, But a chest x-ray film showed the reappearance of a shadow in the upper field of the right lung where the cavity was found previously.
Bronchial carcinoma was found in the tuberculous scar of the right lung by the post mortem examination.
The histological examination showed that it was squamouscell carcinoma.
