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accessory spleen in Medicine

accessory spleen

n.
  1. Any of the small globular masses of splenic tissue occasionally found in the area of the spleen, or in one of the peritoneal folds.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.