Lung - Miliary tuberculosis Case 202
Miliary tuberculosis can occur when tuberculous lung lesions erode pulmonary veins or when when extrapulmonary tuberculous lesions erode systemic veins.This results in hematogenous dissemination of tubercle bacilli producing myriads of 1-2 mm. lesions throughout the body in susceptible hosts. Miliary spread limited to the lungs can occur following erosion of pulmonary arteries by tuberculous lung lesions. In this image there is a necrotizing arteritis with adjacent parenchymal necrosis.
Lung - Miliary tuberculosis Case 202
Miliary tuberculosis can occur when tuberculous lung lesions erode pulmonary veins or when when extrapulmonary tuberculous lesions erode systemic veins.This results in hematogenous dissemination of tubercle bacilli producing myriads of 1-2 mm. lesions throughout the body in susceptible hosts. Miliary spread limited to the lungs can occur following erosion of pulmonary arteries by tuberculous lung lesions. In this image there is a necrotizing arteritis with adjacent parenchymal necrosis.