periapical granuloma

n.
  1. A growing mass of granulation tissue surrounding the apex of a nonvital tooth and arising in response to necrosis of the tooth pulp.apical granuloma dental granuloma
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.