Tuberculosis Overview o Tuberculosis is a chronic infectious disease caused by tubercle bacilli and is the classical exampies of granulomatous inflammation. It may involves various organs of human body but the most common site is the lung. Typically the centers of tubercaiar granulomas undergo caseous necrosisTuberculosis 一 Overview ⚫ Tuberculosis is a chronic infectious disease caused by tubercle bacilli and is the classical exampies of granalomatous inflammation. It may involves various organs of human body,but the most common site is the lung. Typically the centers of tubercaiar granulomas undergo caseous necrosis