Angiosarcoma of the maxillary sinus：a case report

Angiosarcomas are high-grade malignant vascular tumors. They represent only 0.01-0.02% of all malignant tumors, and also only 1-4% are localized in the upper aerodigestive mucosa. Despite aggressive treatment of angiosarcomas, prognosis is poor with a median survival period of 15-24 months, and a 5-year survival rate of 10-35%. They have a high local recurrence rate and a high distant metastasis rate. The main treatment is complete resection with a wide margin. We report a case of angiosarcomas arising in the maxillary sinus, in which we were able to achieve local control by performing a complete resection.