preferred_name: Aganglionosis (sometimes confined to descending or rectosigmoid colon)
preferred_name_lc: aganglionosis (sometimes confined to descending or rectosigmoid colon)
label: Aganglionosis (sometimes confined to descending or rectosigmoid colon)
label_lc: aganglionosis (sometimes confined to descending or rectosigmoid colon)