CTICasesMinute Pulmonary Meningothelial-like Nodules
Imaging findings
High-resolution CT of the chest shows widespread mosaic attenuation with air trapping on expiratory imaging, alongside numerous small, faint ground-glass nodules predominantly in the lower lobes. On thin sections, some of these tiny nodules exhibit subtle central lucencies resembling micro-cheerios.
Key takeaways
Minute pulmonary meningothelial-like nodules are common benign incidental findings on pathology but can occasionally present as numerous radiologically visible ground-glass nodules, a condition sometimes called pulmonary meningotheliomatosis. On CT, these stable nodules typically present with faint ground-glass attenuation and characteristic central lucencies, and they should not be mistaken for metastatic disease, atypical adenomatous hyperplasia, or active infection.
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