title: Kaposiform hemangioendothelioma arising from the internal auditory canal.
abstract: Kaposiform hemangioendothelioma is a rare vascular tumor and locally aggressive endothelial-derived spindle cell neoplasm, which occurs almost exclusively in infants and adolescents. Radiologically, hemangioendothelioma, including Kaposiform hemangioendothelioma, is seen as a highly vascularized well-enhancing tumor, but no characteristic findings differentiate Kaposiform hemangioendothelioma from other soft-tissue tumors, particularly when the tumor is too small to have any locally aggressive features or identifiable large vessels. We present a case of Kaposiform hemangioendothelioma in the internal auditory canal that had no differential features on initial MR images and rapidly grew into a huge mass in a few months.
authors.affiliation: Department of Radiology, Seoul National University College of Medicine, Seoul, Korea.
authors.forename: J M
authors.initials: JM
authors.lastname: Chang
authors.forename: B J
authors.initials: BJ
authors.lastname: Kwon
authors.forename: M H
authors.initials: MH
authors.lastname: Han
authors.forename: H S
authors.initials: HS
authors.lastname: Kang
authors.forename: K H
authors.initials: KH
authors.lastname: Chang
mesh_terms: D004428:Ear Neoplasms / Q000175:diagnosis*; D006394:Hemangiosarcoma / Q000175:diagnosis*; D006801:Humans; D007223:Infant; D007759:Labyrinth Diseases / Q000175:diagnosis*; D008297:Male; D012514:Sarcoma, Kaposi / Q000175:diagnosis*