<radiology> Microscopically normal cells or tissues in abnormal locations (Robbins and Cotran, p. 587f), adrenal choristoma = myelolipoma ... (12 Dec 1998) ... 
(kor″is-to´mә) a mass of histologically normal tissue in an abnormal location.
Type: Term Pronunciation: kō′ris-tō′mă Definitions: 1. A mass formed by maldevelopment of tissue of a type not normally found at that site.