title: Masson tumor in the eyelid.
abstract: Intravascular papillary endothelial hyperplasia (Masson tumor) is an uncommon vascular lesion that rarely affects the periorbital region. Differential diagnosis from some malignant periorbital tumors is challenging and depends mostly on histopathologic confirmation. We present a case with elevated, multilobular lower eyelid lesion that turned out to be intravascular papillary endothelial hyperplasia.
authors.affiliation: From the *Department of Ophthalmology, Selcuk University, Konya, Turkey; and †Department of Ophthalmology, University of California San Francisco, San Francisco, California.
authors.forename: Bengu Ekinci
authors.initials: BE
authors.lastname: Koktekir
authors.forename: Ryan
authors.initials: R
authors.lastname: Basham
authors.forename: Reza
authors.initials: R
authors.lastname: Vagefi
authors.forename: Robert C
authors.initials: RC
authors.lastname: Kersten
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D004730:Endothelium, Vascular / Q000473:pathology*; D005142:Eyelid Neoplasms / Q000175:diagnosis; D005143:Eyelids / Q000098:blood supply / Q000473:pathology*; D005500:Follow-Up Studies; D006391:Hemangioma / Q000175:diagnosis; D006801:Humans; D006965:Hyperplasia / Q000473:pathology; D008297:Male; D019043:Vascular Neoplasms / Q000175:diagnosis