**Core Concept:** Tuberculosis (TB) is an infectious disease caused by Mycobacterium tuberculosis, primarily affecting the lungs (pulmonary TB). In children, TB presentation can be different from adults due to differences in immune system development and organ maturity.

**Why the Correct Answer is Right:** In children, TB is more likely to affect other organs like the central nervous system, bones, and joints (extrapulmonary TB). This is because the immune system in children is less mature and effective at containing the infection, allowing the bacteria to spread to other sites. Additionally, the smaller size of organs and blood vessels in children make it easier for the bacteria to invade different systems.

**Why Each Wrong Option is Incorrect:**

A. False - While extrapulmonary TB does occur in children, pulmonary TB remains the most common presentation.
B. False - Tuberculosis primarily affects the lungs, but the correct answer highlights the increased likelihood of extrapulmonary involvement in children due to their immune system.
C. False - The correct answer focuses on the difference in TB presentation in children compared to adults, not the overall prevalence of TB in children.
D. False - While extrapulmonary TB can affect bones, the correct answer highlights the increased likelihood of involvement in children's organs due to their immune system.

**Clinical Pearl:**

Children with TB should always raise suspicion for extrapulmonary involvement due to their less mature immune system and organ size. A comprehensive history and examination are crucial to identify the signs and symptoms of extrapulmonary TB. Extrapulmonary TB can present with symptoms like fever, weight loss, night sweats, and lymphadenopathy, which may be nonspecific and can mimic other conditions.

**Correct Answer:** D. False - While extrapulmonary TB can affect bones, the correct answer highlights the increased likelihood of involvement in children due to their immune system. In children, extrapulmonary TB can present with symptoms like fever, weight loss, night sweats, and lymphadenopathy, which may be nonspecific and can mimic other conditions.