title: Red ring sign versus aphthous ulcers of colonic mucosa?
authors.forename: M E
authors.initials: ME
authors.lastname: Stark
authors.forename: J T
authors.initials: JT
authors.lastname: Wolfe
mesh_terms: D002399:Catharsis; D003108:Colonic Diseases / Q000139:chemically induced / Q000473:pathology*; D003113:Colonoscopy; D003937:Diagnosis, Differential; D006801:Humans; D007413:Intestinal Mucosa / Q000187:drug effects / Q000473:pathology*; D010710:Phosphates / Q000009:adverse effects*; D012002:Rectal Diseases / Q000139:chemically induced / Q000473:pathology*; D014456:Ulcer / Q000139:chemically induced / Q000473:pathology
chemical_list: D010710:Phosphates; C018279:sodium phosphate