an overproduction of mast cells in body tissues.
Origin of mastocytosis
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
n. pl. mas•to•cy•to•ses (-sēz)
A condition characterized by the abnormal proliferation of mast cells in the tissues.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.