Miliary tuberculosis overview: Difference between revisions
No edit summary |
No edit summary |
||
| Line 10: | Line 10: | ||
==Pathophysiology== | ==Pathophysiology== | ||
Tuberculosis (TB) infection can develop after inhaling droplets sprayed into the air from a cough or sneeze by someone infected with the [[Mycobacterium tuberculosis]] bacteria. Small areas of [[infection]], called [[granuloma]]s (granular [[tumor]]s), develop in the lungs. | Tuberculosis (TB) infection can develop after inhaling droplets sprayed into the air from a cough or sneeze by someone infected with the [[Mycobacterium tuberculosis]] bacteria. Small areas of [[infection]], called [[granuloma]]s (granular [[tumor]]s), develop in the lungs. | ||
==Causes== | |||
Disseminated TB develops in the small number of infected people whose [[immune]] systems do not successfully contain the primary infection. It can occur within weeks of the primary infection. Sometimes, it does not occur until years after you become infected. Chances of having miliary tuberculosis is high if the immune system is weakened due to disease (such as AIDS) or certain medications. Infants and the elderly are also at higher risk. | |||
==References== | ==References== | ||
Revision as of 17:20, 11 December 2012
|
Miliary tuberculosis Microchapters |
|
Diagnosis |
|---|
|
Treatment |
|
Case Studies |
|
Miliary tuberculosis overview On the Web |
|
American Roentgen Ray Society Images of Miliary tuberculosis overview |
|
Risk calculators and risk factors for Miliary tuberculosis overview |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Please help WikiDoc by adding more content here. It's easy! Click here to learn about editing.
Overview
Miliary tuberculosis (or disseminated TB) 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 X-ray of many tiny spots distributed throughout the lung fields with the appearance similar to millet seeds, thus the term "miliary" tuberculosis. Miliary TB may infect any number of organs including the lungs, liver, and spleen. It is a complication of 1-3% of all TB cases.
Pathophysiology
Tuberculosis (TB) infection can develop after inhaling droplets sprayed into the air from a cough or sneeze by someone infected with the Mycobacterium tuberculosis bacteria. Small areas of infection, called granulomas (granular tumors), develop in the lungs.
Causes
Disseminated TB develops in the small number of infected people whose immune systems do not successfully contain the primary infection. It can occur within weeks of the primary infection. Sometimes, it does not occur until years after you become infected. Chances of having miliary tuberculosis is high if the immune system is weakened due to disease (such as AIDS) or certain medications. Infants and the elderly are also at higher risk.