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fibromyxoma

[fī′brō-mĭk-sō′mə]
n.
  1. A benign tumor that contains a large amount of mature fibroblasts and connective tissue.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.