Primairy TB is usually clinically silent. In 5% of infected individuals the immunity is inadequate and clinically active disease develops, which is known as progressive primary disease (9). Postprimary TB is reactivation of the latent infection and occurs in 5% of infected patients. On the CXR it is seen as consolidation with cavitation in the apical segments of the upper and lower lobes. Miliary TB is the result of hematogenous spread. Here a patient with postprimary TB with cavitaty formation in the left upper lobe. #Clinical #Radiology #CXR #Tuberculosis #TB #Cavitary #SecondaryTB #RadiologyAssistant
