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Tuberculosis (TB), also known colloquially as the "white death", or historically as consumption, [7] is a contagious disease usually caused by Mycobacterium tuberculosis (MTB) bacteria. [1] Tuberculosis generally affects the lungs , but it can also affect other parts of the body. [ 1 ]
Symptoms of M. tuberculosis include coughing that lasts for more than three weeks, hemoptysis, chest pain when breathing or coughing, weight loss, fatigue, fever, night sweats, chills, and loss of appetite. M. tuberculosis also has the potential of spreading to other parts of the body. This can cause blood in urine if the kidneys are affected ...
Tubercles are nodules that contain caseous necrosis, which form in the lungs as a result of an infection with Mycobacterium tuberculosis in the patients with tuberculosis. Granulomas form in the infected tissue and undergo necrosis in the centre. Tubercles are also known as tuberculous nodules, or tuberculomas. The affected parts develop ...
Ghon's complex is a lesion seen in the lung that is caused by tuberculosis. [1] [2] The lesions consist of a Ghon focus along with pulmonary lymphadenopathy within a nearby pulmonary lymph node. A Ghon's complex retains viable bacteria, making them sources of long-term infection, which may reactivate and trigger secondary tuberculosis later in ...
Tuberculosis is a disease caused by a bacterium called Mycobacterium tuberculosis, per the CDC. Tuberculosis spreads through the air from one person to another. Someone with an active infection ...
The pathophysiology of tuberculous meningitis involves bacterial invasion of the brain parenchyma meninges or cortex, causing the formation of small subpial foci. These foci, termed Rich foci, are necrotic and expand as the colonies within them multiply. Tubercle (focal) rupture in the subarachnoid space causes meningitis. [3]
Miliary tuberculosis is a form of tuberculosis that is characterized by a wide dissemination into the human body and by the tiny size of the lesions (1–5 mm). Its name comes from a distinctive pattern seen on a chest radiograph of many tiny spots distributed throughout the lung fields with the appearance similar to millet seeds—thus the term "miliary" tuberculosis.
Abdominal tuberculosis accounts for It makes up for 5% of the tuberculosis cases worldwide, [1] out of which 1–3% is gastrointestinal tuberculosis. [11] It makes up for less than 11–15% of all tuberculosis cases in immunocompetent individuals. [1] [12] Approximately 20% of individuals with abdominal tuberculosis have active tuberculosis. [13]