Endovascular papillary hemangioma of the lip

Abstract

We present a previously undescribed, intravenously occurring papillary hemangioma of the lip in a 10-year-old girl. Maze-like anastomosing capillary loops were found within the numerous, dilated veins widely distributed in the submucosa. These peculiar endovascular papillae of bland endothelial cells plugged the lumens and bore a striking resemblance to the renal glomeruli. Thrombi or other associated vascular lesions could not be identified. Because of its histological similarity to endovascular papillary angioendothelioma-like tumor, we designate this tumor as endovascular papillary hemangioma.

Oral endovascular papillary angioendothelioma (Dabska tumor)

“…So‐called ‘dabskoid intravascular papillary tufts’, as illustrated by Takaoka et al. (1), have been found in a variety of reactive and neoplastic vascular lesions (5–8). As both the blood vessel nature and intravascular origin are admittedly evident by the prominent intraluminal content of erythrocytes and the surrounding thin vascular wall, as stated by the authors, it seems likely in my opinion that their case has more features of a mature form of intravascular papillary endothelial hyperplasia rather than of any kind of EPA or EPA‐like tumors.…”