title: POSTERIOR DISPLACEMENT OF THE ANGULUS.
mesh_terms: D000818:Animals; D049872:Bivalvia; D003937:Diagnosis, Differential; D004381:Duodenal Ulcer; D005773:Gastroscopy; D006801:Humans; D013274:Stomach Neoplasms; D013276:Stomach Ulcer
keywords: DIAGNOSIS, DIFFERENTIAL; DUODENAL ULCER; GASTROSCOPY; STOMACH NEOPLASMS; STOMACH ULCER