- Etiology: Mycobacterium tuberculosis, inhale bacillis -> primary focus -> lymphangitic spread -> hilar mediastinal lymphadenopathy -> airway compression, types are primary (Ghon focus, Ghon complex, Ranke complex) / secondary / miliary
- — Primary infection most commonly anywhere in lung, has associated adenopathy, Ghon focus is primary infection in lung, Ghon complex is primary infection in lung + hilar lymphadenopathy, Ranke complex is calcified Ghon complex
- — Secondary infection is reactivation, infection most commonly (90%) in apices, does not have lymphadenopathy
- — Methods of spread are bronchogenic, lymphatic, hematogenous / miliary to lungs + kidneys + liver + brain
- Complications: airway obstruction, endobronchial invasion, hematogenous spread (miliary)
Radiology Cases of Tuberculosis Pneumonia

