title: ULCER?--OR CANCER?CARCINOMA OF THE FIRST PART OF THE DUODENUM.
mesh_terms: D002288:Adenocarcinoma, Mucinous; D002277:Carcinoma; D003937:Diagnosis, Differential; D004379:Duodenal Neoplasms; D004381:Duodenal Ulcer; D004386:Duodenum; D005743:Gastrectomy; D006801:Humans; D009369:Neoplasms / Q000175:diagnosis*; D014456:Ulcer
keywords: CARCINOMA, MUCINOUS; DIAGNOSIS, DIFFERENTIAL; DUODENAL NEOPLASMS; DUODENAL ULCER; GASTRECTOMY; NEOPLASM DIAGNOSIS