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hemangiosarcoma

[ hĭ-măn′jē-ō-sär-kōmə ]
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n.

A rare malignant neoplasm characterized by rapidly proliferating anaplastic cells derived from blood vessels and lining blood-filled spaces.

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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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