CTICasesPulmonary tuberculosis
Imaging findings
Chest radiograph shows upper-lobe-predominant consolidations. CT chest shows bilateral upper lobe cavities and a diffuse pattern of small, clustered consolidations forming 'acinar rosettes' tracking down to the bases, associated with mature left pleural thickening. PCR confirmed Mycobacterium tuberculosis.
Key takeaways
Active pulmonary tuberculosis classically presents with upper lobe cavitation and endobronchial spread. Acinar rosettes represent a more florid endobronchial filling pattern where the bronchioles and peribronchiolar alveoli are completely opacified.
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