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Case Report
HEAD AND NECK

Kaposiform Hemangioendothelioma Arising from the Internal Auditory Canal

J.M. Changa, B.J. Kwona, M.H. Hana,b, H.S. Kanga and K.H. Changa,b,c

a Department of Radiology, Seoul National University College of Medicine, Seoul, Korea
b Clinical Research Institute, Seoul National University Hospital, Seoul, Korea
c Institute of Radiation Medicine, Seoul National University Medical Research Center, Seoul, Korea

Address correspondence to: Bae Ju Kwon, MD, Department of Diagnostic Radiology, Seoul National University Hospital, 28 Yongon-dong, Chongno-gu, Seoul 110–744, Korea

SUMMARY: 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.




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Y-J CHEN, C-K WANG, Y-C TIEN, and T-J HSIEH
MRI of multifocal kaposiform haemangioendothelioma without Kasabach-Merritt phenomenon
Br. J. Radiol., March 1, 2009; 82(975): e51 - e54.
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