CTICasesMetastatic angiosarcoma of the skin
Imaging findings
Chest radiograph and CT show a secondary spontaneous hydropneumothorax. CT demonstrates bilateral, multifocal, thin- and thick-walled pulmonary cysts, some containing internal septations and surrounded by ground-glass halos representing localized hemorrhage.
Key takeaways
Metastatic angiosarcoma of the skin is a classic cause of thin-walled cystic metastases in the lungs. Rupture of these subpleural cysts into the pleural cavity commonly leads to spontaneous pneumothorax or hydropneumothorax, and associated ground-glass halos represent tumor-related hemorrhage.
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