subependymoma
(sŭb′ĭ-pĕn′də-mō′mə)- An ependymoma in which there are discrete, lobulated nodules in the walls of the anterior third or posterior fourth ventricles of the brain.
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The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.