2014 年 60 巻 3 号 p. 132-136
Angiosarcoma is a malignant tumor of endothelial cells. It is a fatal disease because of the high risk of hematogenous metastasis. Angiosarcoma metastatic to the oral and maxillofacial region is extremely rare because angiosarcoma itself is rare. We report a case of angiosarcoma of the scalp that metastasized to the maxillary gingiva with a review the literature. A 72-year-old man was referred to our department in August 2009 because of a hemorrhagic mass in the right maxillary gingiva. The patient had been admitted to our hospital to receive treatment for an angiosarcoma of the scalp. He was aware that the mass was gradually growing during the past 2 months. Intraoral examination revealed a reddish-brown mass, approximately 20 mm in diameter, at the premolar region of the right maxillary gingiva. An X-ray film showed no resorption of the alveolar bone. A biopsy of the mass led to a diagnosis of angiosarcoma of the scalp metastatic to the maxillary gingiva. However, it was impossible to treat the oral metastatic lesion because of deterioration of the lung metastases. Two months later, he died of respiratory insufficiency.