Recent reports have noted what change in the radiographic appearance of MLTB?

• A. More variation in appearance
• B. Less variation
• C. No variation
• D. Decrease in variation

Answer: (A)

Radiographic patterns of this condition are now recognized to be more diverse than older descriptions suggested. Rather than a single, uniform appearance, cases can show a wide spectrum—from focal nodules or patchy alveolar disease to diffuse interstitial or mixed patterns, sometimes with pleural involvement. This variation arises because radiographs reflect multiple factors: disease stage and distribution (airways versus parenchyma), host response, coexisting lung disease, prior or ongoing therapy, and differences in imaging technique or sensitivity. As understanding and imaging improve, we detect phenotypes that were previously overlooked, leading to the impression of greater variation in appearance.