#peptic_ulcer__peptic_ulceration  an ulcer of the mucous membrane lining of the alimentary tract
  supertype:  #ulcer__ulceration  a circumscribed inflammatory and often suppurating lesion on the skin or an internal mucous surface resulting in necrosis of tissue
  subtype:  #duodenal_ulcer  a peptic ulcer of the duodenum
  subtype:  #gastric_ulcer__gastriculcer  a peptic ulcer of the stomach

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