 Notable extrapulmonary infection sites include the pleura (in tuberculous pleurisy), the central nervous system (in tuberculous meningitis), the lymphatic system (in scrofula of the neck), the genitourinary system (in urogenital tuberculosis), and the bones and joints (in Pott disease of the spine), among others.Spread to lymph nodes is the most common.An ulcer originating from nearby infected lymph nodes may occur and is painless, slowly enlarging and has an appearance of "wash leather".