| − | '''Mastocytoma''' (MAS-toh-sy-TOH-muh) is a growth or [[lump]] of mast [[cell]]s (a type of [[white blood cell]]. Mast cell tumors can involve the [[skin]], subcutaneous tissue, and muscle tissue. Also called mast cell [[tumor]]. | + | '''Mastocytoma''' (MAS-toh-sy-TOH-muh) is a growth or [[lump]] of mast [[cell]]s (a type of [[white blood cell]]. Mast cell tumors can involve the [[skin]], subcutaneous tissue, and muscle tissue. It is also called a mast cell [[tumor]]. |