_:vb50947759 "url:http://en.wikipedia.org/wiki/Megacolon"^^ . _:vb50947759 "A colonic disease that is characterized by an abnormal dilation of the colon."^^ . _:vb50947759 . _:vb50947759 . _:vb50947759 . _:vb50947759 . _:vb50947759 .