CTICasesCoccidioidomycosis
Imaging findings
Chest radiographs appear normal, while CT chest demonstrates a large, solid nodule in the posterior basal segment of the left lower lobe with slight adjacent airway wall thickening. Serology confirmed Coccidioides infection.
Key takeaways
Coccidioidomycosis can present as a solitary, asymptomatic pulmonary nodule. Because it is located in the posterior basal gutter of the lower lobe, it can be completely hidden on standard chest radiographs, requiring CT for detection.
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