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sympathoblastoma

(sĭm′pə-thō-blă-stōmə)
n.
  1. A completely undifferentiated malignant tumor made up of sympathoblasts and originating from embryonal cells of the sympathetic nervous system.sympathetoblastoma sympathicoblastoma sympathicogonioma sympathogonioma
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.