[Dilatation of the COLON, often to alarming dimensions. There are various types of megacolon including congenital megacolon in HIRSCHSPRUNG DISEASE, idiopathic megacolon in CONSTIPATION, and TOXIC MEGACOLON. ( MSH )]
UMLS (NCI) C0025160 Relation/PAR: colon disorder
Relation/CHD: aganglionic megacolon
Megacolon, Toxic