CT scan of peritoneal tuberculosis, with thickened omentum and peritoneal surfaces.<unk>  is tuberculosis (TB) within a location in the body other than the lungs. It accounts for an increasing fraction of active cases, from 20 to 40% according to published reports, and causes other kinds of TB. These are collectively denoted as<unk> ".<unk>  TB occurs more commonly in immunosuppressed persons and young children. In those with HIV, this occurs in more than 50% of cases. Notable<unk>  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. Infection of the lymph nodes, known as tubercular lymphadenitis, is the most common<unk>  form of tuberculosis. An ulcer originating from nearby infected lymph nodes may occur and is painless. It typically enlarges slowly and has an appearance of "wash leather". Histopathological specimen showing tuberculosis of the duodenum. Lamina propria is stuffed with wall-to-wall histiocytes. This Kinyoun carbolfuchsin stain shows innumerable acid-fast bacilli. When it spreads to the bones, it is known as skeletal tuberculosis, a form of osteomyelitis. Tuberculosis has been present in humans since ancient times. Central nervous system infections include tuberculous meningitis, intracranial tuberculomas, and spinal tuberculous arachnoiditis. Abdominal infections include gastrointestinal tuberculosis (which is important to distinguish from Crohn's disease, since immunosuppressive therapy used for the latter can lead to dissemination), tuberculous peritonitis, and genitourinary tuberculosis. A potentially more serious, widespread form of TB is called "disseminated tuberculosis", also known as miliary tuberculosis. Miliary TB currently makes up about 10% of<unk>  cases.
Extrapulmonary tuberculosis
Tuberculosis
Miliary tuberculosis
Primary inoculation tuberculosis
Multidrug-resistant tuberculosis
Melioidosis
Chronic pulmonary aspergillosis
Sarcoidosis