CTICasesPulmonary tuberculosis
Imaging findings
Chest radiograph in a student from the Philippines shows ill-defined opacity in the left parahilar region without upper lobe cavities. Sputum secretions and viral testing confirmed active Mycobacterium tuberculosis infection and newly diagnosed AIDS with a low CD4 count.
Key takeaways
In immunocompromised patients with AIDS and low CD4 counts, tuberculosis frequently manifests atypically. Differentiating features from classic reactivation tuberculosis include lack of cavitation, lower or middle lobe consolidation, and mediastinal/hilar lymphadenopathy.
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