No. TB can affect almost any part of the body. It is broadly classified into: Pulmonary TB (PTB): Affects the lungs and spreads through coughing, sneezing, or close contact. Extra-Pulmonary TB (EPTB): Affects other organs such as lymph nodes, spine, brain, abdomen, bones, kidneys, or reproductive organs. TB bacteria usually enter the body through the lungs but can travel via blood or lymph nodes to other organs.