What is pathophysiology of pulmonary tuberculosis?
Infection occurs when a person inhales droplet nuclei containing tubercle bacilli that reach the alveoli of the lungs. These tubercle bacilli are ingested by alveolar macrophages; the majority of these bacilli are destroyed or inhibited.
What is the difference between Mycobacterium tuberculosis and pulmonary tuberculosis?
The bacterium Mycobacterium tuberculosis causes tuberculosis (TB), a contagious, airborne infection that destroys body tissue. Pulmonary TB occurs when M. tuberculosis primarily attacks the lungs. However, it can spread from there to other organs.
What is the most severe form of tuberculosis?
A potentially more serious, widespread form of TB is called “disseminated tuberculosis”, it is also known as miliary tuberculosis. Miliary TB currently makes up about 10% of extrapulmonary cases.
How do you define a tuberculosis?
Tuberculosis (TB) is a potentially serious infectious disease that mainly affects the lungs. The bacteria that cause tuberculosis are spread from person to person through tiny droplets released into the air via coughs and sneezes.
What are the pathological changes in tuberculosis?
Arthur Dannenberg described the pathology of tuberculosis in detail [2, 3]. There are five stages: onset, symbiosis, early stages of caseous necrosis, interplay of cell-mediated immunity and tissue damaging delayed-type hypersensitivity, and liquefaction and cavity formation.
What are the two stages of TB?
There are 3 stages of TB: exposure, latent, and active disease. A TB skin test or a TB blood test can often diagnose the infection. But other testing is also often needed. Treatment exactly as recommended is needed to cure the disease and prevent its spread to other people.
What is the last stage of tuberculosis?
Stage Three The body brings in more immune cells to stabilize the site, and the infection is under control. At least nine of ten patients infected with Mycobacterium tuberculosis stop at stage 3 and do not develop symptoms or physical signs of active disease.
