_:vb50946980 "url:http://digestive.niddk.nih.gov/ddiseases/pubs/hirschsprungs_ez/"^^ . _:vb50946980 "url:http://www.nlm.nih.gov/medlineplus/ency/article/001140.htm"^^ . _:vb50946980 . _:vb50946980 . _:vb50946980 . _:vb50946980 . _:vb50946980 "url:http://www.uptodate.com/contents/congenital-aganglionic-megacolon-hirschsprung-disease"^^ . _:vb50946980 "url:http://en.wikipedia.org/wiki/Hirschsprung%27s_disease"^^ . _:vb50946980 . _:vb50946980 "A megacolon that is characterized by a blockage of the large intestine due to improper muscle movement in the bowel."^^ . _:vb50946980 .