RELATIONSHIP of gastric ulcer to gastric cancer.
D004067:Digestive System Neoplasms; D041981:Gastrointestinal Tract; D009369:Neoplasms; D010437:Peptic Ulcer; D013274:Stomach Neoplasms; D013276:Stomach Ulcer
GASTROINTESTINAL SYSTEM/neoplasms; PEPTIC ULCER