CTICasesAlveolar sarcoidosis
Imaging findings
Chest CT shows symmetric, extensive hilar and mediastinal lymphadenopathy, alongside multiple large, rounded parenchymal consolidations and ground-glass opacities with poorly defined margins and small satellite nodules in the periphery.
Key takeaways
Nodular or alveolar sarcoidosis is an atypical manifestation of sarcoidosis, characterized by large confluent granulomatous consolidations that mimic metastases or infection. It is often asymptomatic despite dramatic imaging findings, and the presence of small peripheral nodules (the sarcoid galaxy sign) can be a useful diagnostic clue.
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