Tuberculosis is found in the right lung, in the post-apical segment of the upper lobe and in the dorsal segment of the lower lobe. Tuberculosis is an infectious disease of the lungs caused mainly by Mycobacterium tuberculosis, which does not necessarily develop when the human body is infected with tuberculosis bacteria. The basic pathological features of TB patients are exudation, caseous necrosis and other proliferative tissue reactions, and in some patients, cavity formation. If tuberculosis is suspected, routine blood tests, blood sedimentation, chest X-ray, sputum for Mycobacterium tuberculosis, tuberculin test, etc. should be completed.