Bilateral Hydropneumothorax Secondary to Multiple Rapidly-Growing Cystic Metastases in Angiosarcoma of the Scalp

Angiosarcoma of the scalp is a rare tumor of vascular origin, with a poor prognosis. We report a 72-year-old male patient with bilateral hydropneumothorax secondary to multiple rapidly-growing cystic metastases in angiosarcoma of the scalp. The chest X-ray and computerized tomography (CT) showed multiple rapid onset and growing cystic metastasis during a one-month period, with some central breakdown of nodule lesions. These findings suggest tumor central necrosis rapidly forming large thin-walled cysts that induce a bronchopleural fistula and are complicated with hydropneumothorax.