FIELD: gastroenterology. SUBSTANCE: from morphologic examination of mucous tissues of antral part of stomach, one determines gastric mucosa ulceration index and, when its value is equal to 94.2 or higher, exacerbation is diagnosed, if index is within the range 68.2-94.1, partial remission, and at 40.3-68.1 clinical- morphological remission of ulcer. EFFECT: enabled differential diagnosis and estimation of efficiency of therapy. 1 tbl, 3 ex
