What happens in the 2nd phase of Miliary TB?

What happens in the 2nd phase of Miliary TB?

• A. It enters bloodstream and disseminates to multiple organs
• B. It forms granulomas and then resolves
• C. Mycobacterium tuberculosis causes widespread, rapid infection with thousands of tiny tubercular foci resembling millet seeds
• D. It leads to a single large cavitary lesion

Answer: (C)

In the second phase of miliary TB the key idea is widespread hematogenous spread that seeds many organs. Mycobacterium tuberculosis breaks into the bloodstream from the initial focus and disseminates throughout the body, producing thousands of tiny tubercular foci that resemble millet seeds. This creates the classic miliary pattern of innumerable small nodules in the lungs and other organs and explains why the disease can progress rapidly and involve multiple sites. Other options describe things not typical of this disseminated phase: a single cavitary lesion points to reactivation TB, and granulomas forming and then resolving reflect containment rather than disseminated disease. Simply entering the bloodstream happens, but the hallmark is the numerous tiny foci spread across the body.

In the second phase of miliary TB the key idea is widespread hematogenous spread that seeds many organs. Mycobacterium tuberculosis breaks into the bloodstream from the initial focus and disseminates throughout the body, producing thousands of tiny tubercular foci that resemble millet seeds. This creates the classic miliary pattern of innumerable small nodules in the lungs and other organs and explains why the disease can progress rapidly and involve multiple sites. Other options describe things not typical of this disseminated phase: a single cavitary lesion points to reactivation TB, and granulomas forming and then resolving reflect containment rather than disseminated disease. Simply entering the bloodstream happens, but the hallmark is the numerous tiny foci spread across the body.