title: Hemangiopericytoma presenting as a congenital midline nasal mass.
abstract: Hemangiopericytoma is a rare tumor that is thought to originate from the vascular pericytes of Zimmerman. Although they represent less than 1% of all vascular neoplasms, 15% to 30% of these tumors are found in the head and neck. The benign or malignant nature of a hemangiopericytoma is determined clinically, not histologically, indicating the need for close and careful follow-up. We describe a congenital midline nasal mass in a 2-year-old boy that proved to be a hemangiopericytoma. Clinical photographs, a magnetic resonance imaging scan, and histologic photographs depict the findings. The evaluation and differential diagnosis of midline nasal masses are discussed.
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, The New York Eye and Ear Infirmary, New York 10003, USA.
authors.forename: P
authors.initials: P
authors.lastname: Sabini
authors.forename: G D
authors.initials: GD
authors.lastname: Josephson
authors.forename: R T
authors.initials: RT
authors.lastname: Yung
authors.forename: J N
authors.initials: JN
authors.lastname: Dolitsky
mesh_terms: D002675:Child, Preschool; D003937:Diagnosis, Differential; D006393:Hemangiopericytoma / Q000175:diagnosis* / Q000601:surgery; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009669:Nose Neoplasms / Q000175:diagnosis* / Q000601:surgery