Susceptible organs: Tuberculosis typically affects the lungs (about 90 % of cases), but besides lung tissue, M. tuberculosis can also invade other body tissues, especially those that are oxygen-rich, such as in the kidneys, the meninges (the membranes that enclose the brain), and bone tissues in children. In Taiwan, the most commonly seen non-pulmonary forms of tuberculosis affect the lymphatic system and the bones.
●好發部位：好發於肺部（約佔九成），結核桿菌除了侵犯肺部組織，也會侵犯人體其他組織，尤其是含氧量較豐富的器官，如腎臟、腦膜及兒童的骨骼組織。台灣較常見的肺外結核是淋巴結核和骨結核。