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Medical Term:

congenital megacolon


congenital dilation and hypertrophy of the colon due to absence (aganglionosis) or marked reduction (hypoganglionosis) in the number of ganglion cells of the myenteric plexus of the rectum and a varying but continuous length of gut above the rectum; seen in humans and dogs.

Synonym(s): Hirschsprung disease

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.