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    Incisura angularis is one of the important parts for evaluating mucosal atrophy and cancer risk. We determined the type of mucosa at incisura angularis in Helicobacter pylori-naïve normal stomach. Subjects aged 40 years or older who underwent esophagogastroduodenoscopy for dyspepsia or a routine health checkup were recruited in 24 facilities between March 2008 and February 2009. Serum antibody to H. pylori was measured. Endoscopic atrophy was evaluated according to Updated Kimura-Takemoto classification. Five biopsy specimens were taken from the incisura angularis and greater and lesser curvatures of the antrum and corpus. These specimens were histologically classified as fundic, pyloric or transitional. H. pylori-naïve normal stomach was defined with the strictest criterion among various combinations of histological, endoscopic and serum findings. We determined histological type of mucosa at incisura angularis in H. pylori-naïve normal stomach. A total of 270 subjects (122 men, mean 64.6 yo) were analyzed. The strictest criterion consists of serum antibody ≤ 3.0 U/mL, endoscopic atrophy C-1 and histological grade 0 in all of the five items in Updated Sydney System. The numbers having fundic, transitional and pyloric mucosa at incisura angularis under the strictest criterion were 13 (50%), 13 (50%) and 0, respectively. The probability that the type of mucosa at incisura angularis would be pyloric was almost zero (97.5% confidence interval 0-0.132). Incisura angularis of the stomach may not belong to pyloric, but fundic or transitional mucosa in H. pylori-naïve normal stomach. UMIN000018218. © 2020 Japan Gastroenterological Endoscopy Society.

    Citation

    Shigemi Nakajima, Hidenobu Watanabe, Takuro Shimbo, Nobuhiro Fukuta, Takahiro Kato, Nobuaki Yagi, Shuichi Terao, Mototsugu Kato, Tomoari Kamada, Junichi Kawashima, Naomi Uemura, Kazunori Ida, Members of the Study Group for Establishing Endoscopic Diagnosis of Chronic Gastritis. Incisura angularis belongs to fundic or transitional gland regions in Helicobacter pylori-naïve normal stomach: Sub-analysis of the prospective multi-center study. Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society. 2021 Jan;33(1):125-132


    PMID: 32239550

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