CTICasesCystic pulmonary metastases
Imaging findings
Chest CT shows multiple irregular, thin-walled cystic lesions scattered throughout both lungs, extending down to the lung bases, in a patient with a history of colon adenocarcinoma. Biopsy confirmed metastatic adenocarcinoma.
Key takeaways
Pulmonary metastases from gastrointestinal adenocarcinomas can manifest as thin-walled cystic lesions. They can mimic other cystic lung diseases such as Langerhans cell histiocytosis, but can be distinguished by their random distribution extending to the lung bases and their developmental history.
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