Late Generalization Miliary TB features?

• A. Late Generalization (Post-Primary/Reactivation) Miliary TB
• B. Early Generalization Miliary TB
• C. Progressive TB
• D. Primary TB

Answer: (A)

Late generalization refers to miliary TB that arises after reactivation of a latent infection rather than at the initial exposure. In this pattern, bacilli re-enter the bloodstream and spread hematogenously, producing a diffuse millet-seed pattern of nodules throughout the lungs and often involving multiple other organs. Clinically, adults with this form typically have systemic symptoms such as fever, night sweats, and weight loss, with a subacute course. Chest imaging shows widespread tiny nodules in both lungs, and extrapulmonary involvement is common—affecting liver, spleen, bone marrow, lymph nodes, and meninges—leading to hepatosplenomegaly, cytopenias, or meningitis signs. This distinguishes it from primary TB, which is more common in children and often presents with a Ghon complex, and from early generalized (disseminated) TB, which reflects dissemination at the time of the initial infection.