The appearance of the CXR in various point of TB infection is important information....what are we looking at here????

Some terminology....

Ghon focus: granuloma in the lung

Ghon complex: graulmoa and ipsilaterl adenopathy

Post Primary TB: nodular / alveolar infiltrates in the upper lung zones (apical and posterior segment of the upper lobe and superior segment of the lower lobe), potentially cavitation


Atypical Patterns:

• Lower and mid lung zone infiltrates: in isolation or in association +/- pleural effusion
• Pleural effusion: usually unilateral, almost always exudative, high percentage of lymphocyte count
• Miliary TB: 1-5mm discrete nodules scattered throughout the lung
• Tuberculmoa: solitary lesion of the chest x -ray