CTICasesCystic Pulmonary Metastases from Angiosarcoma
Imaging findings
A patient with scalp angiosarcoma has perivascular-appearing pulmonary cysts that enlarged substantially between a study in June and one a few days prior, with one cyst appearing to have ruptured and produced a pneumothorax.
Key takeaways
Angiosarcoma characteristically produces cystic pulmonary metastases that can enlarge over time and rupture to cause pneumothorax. Recognizing enlarging thin-walled cystic lesions in a patient with a known angiosarcoma (such as scalp angiosarcoma) as cystic metastatic disease, rather than a primary cystic lung process, is the key teaching point.
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