Intravascular papillary endothelial hyperplasia (Masson's tumor) of the conjunctiva. Unusual location of a rare vascular tumor

Abstract

Intravascular papillary endothelial hyperplasia (IPEH) is characterized by proliferation of endothelial cells usually occurring within a long-standing vascular malformation or tumor. IPEH usually affects neck, head and lower extremities, and few orbital and eyelid cases have been reported. We present a unique case, a 48-years-old man with a purple, elevated, multilobular conjunctival lesion of three-weeks duration that underwent an excisional biopsy. Pathological features revealed intravascular papillary endothelial hyperplasia (Masson's tumor).

Keywords: Conjunctival neoplasms; Hiperplasia endotelial papilar intravascular; Intravascular papillary endothelial hyperplasia; Masson tumor; Neoplasias conjuntivales; Tumor de Masson.