title: Four cases of the red ring sign.
authors: M
authors: M
authors: Chiba
authors: M
authors: M
authors: Iizuka
authors: M
authors: M
authors: Ohtaka
authors: T
authors: T
authors: Kuwabara
authors: O
authors: O
authors: Masamune
authors: T
authors: T
authors: Mukoujima
authors: M
authors: M
authors: Ito
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D003093:Colitis, Ulcerative / Q000473:pathology; D003113:Colonoscopy; D003424:Crohn Disease / Q000473:pathology; D005260:Female; D006801:Humans; D007420:Intestine, Large / Q000473:pathology*; D008198:Lymph Nodes / Q000473:pathology; D008297:Male