Kaposiform hemangioendothelioma arising from the internal auditory canal.
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.
Chang
J M
JM
Department of Radiology, Seoul National University College of Medicine, Seoul, Korea.
Kwon
B J
BJ
Han
M H
MH
Kang
H S
HS
Chang
K H
KH
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*