[3 cases of duodenal ulcer with tumoral symptomatology].
D004379:Duodenal Neoplasms; D004381:Duodenal Ulcer; D004386:Duodenum; D006801:Humans; D009369:Neoplasms; D010437:Peptic Ulcer / Q000175:diagnosis*
DUODENUM/neoplasms; PEPTIC ULCER/diagnosis