Venous vascular malformation of the floor of mouth masquerading as a dermoid tumor

摘要

Venous vascular malformations (VVMs) are described as abnormal post-capillary lesions which exhibit low flow. These are typically malleable and may grow with endocrine fluctuations. A VVM that mimics the classic appearance of dermoid tumor on imaging has never been reported. We encountered a 43-year-old woman with intermittent dysphagia relating to a firm submandibular mass. Physical exam and cross-sectional imaging revealed features consistent with variant dermoid cyst. However, catheter angiography eventually demonstrated a VVM which possessed vessels of variable size and partial thrombosis. We report the case and propose that catheter angiography remains important in cases where vascular malformation is considered. (C) 2016 Elsevier Inc. All rights reserved.