title: [Characteristics of the clinical course and diagnosis of peptic ulcer with localization in the upper portion of the stomach].
mesh_terms: D000368:Aged; D003937:Diagnosis, Differential; D005745:Gastric Acidity Determination; D005773:Gastroscopy; D006801:Humans; D008297:Male; D008875:Middle Aged; D010439:Peptic Ulcer Perforation / Q000209:etiology; D011859:Radiography; D013274:Stomach Neoplasms / Q000175:diagnosis / Q000209:etiology; D013276:Stomach Ulcer / Q000150:complications / Q000175:diagnosis / Q000000981:diagnostic imaging
vernacular_title: Osobennosti kliniki i diagnostiki iazvennoĭ bolezni s lokalizatsieĭ v verkhnem otdele zheludka