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pyoderma gangrenosum in Medicine

pyoderma gangrenosum

(găng′grə-nōsəm)
n.
  1. A chronic skin disease, usually of the trunk, characterized by large spreading ulcers.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.