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reactivation tuberculosis

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reactivation tuberculosis,
a form of secondary tuberculosis that recurs as a result of the activation of a dormant endogenous infection. Causes of the reactivation may include loss of immunity, hormonal changes, or poor nutrition.

tuberculosis (toobur´kūlō´sis),
n an infectious disease caused by
M. tuberculosis and characterized by the formation of tubercles in the tissues.
Enlarge picture
Tuberculosis of tongue.
tuberculous lymphadenitis
n an inflammation of the lymph glands caused by the presence of
M. tuberculosis.
tuberculosis, multidrug-resistant (MDR),
n type that no longer responds to treatment due to incomplete or improper use of medication.
tuberculosis, reactivation,
n a recurrence in a patient who has been symptom free for a period of years. Reactivation tuberculosis usually responds to treatment.


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The classical radiographic picture mimics reactivation tuberculosis with cavitations and is characterized by progressive fibronodular opacities (< 5 mm nodules) with cavities.
It is used extensively to differentiate reactivation tuberculosis (TB), which is due to a remote infection, from disease caused by recently transmitted organisms.
 
 
 
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