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mycobacteria ((Niehl-Neelsen stain, TB DNA, tuberculin test), MTBC…
mycobacteria
Niehl-Neelsen stain
TB DNA
tuberculin test
MTBC mycobacterium tuberculosis complex
primary infection
Ghon complex + fibrosis calcification = Ranke complex
Ghon focus + regional lymphadenopathy = Ghon complex
caseous necrosis, lymphatic spread
die or tubercle/Ghon focus
granulomatous inflam
multinucleated giant cell: Langhan giant cell
epithelioid histiocytes
central necrosis: caseous necrosis
alveolar macrophage
secondary infection
reactivation
disseminated infection
miliary TB
extrapulmonary TB
TB meningitis
TB lymphadenitis
TB spondylitis
airborne
aerobe
high lipid content acid-fast bacilli Ziehl-Neelsen stain
RED carbol fuschin
acid alcohol
BLUE methylene blue
culture
culture medium: Löwenstein–Jensen medium
slow growing: 4-6 weeks
Runyon classification
pigment
light
anti-TB
2 months
isoniazid
rifampicin
pyrazinamide
ethambutol
4 months
isoniazid
rifampicin
vaccine
BCG Bacillus Calmette–Guérin
NTM nontuberculous mycobacteria
mycobacterium leprae