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Endoscopic Findings of Colorectal Epithelial Non-neoplastic Polyps Keisuke Kawasaki 1 , Junji Umeno 1 , Koichi Kurahara 2 , Shinjiro Egashira 2 , Yoshiaki Taniguchi 1,3 , Yumi Oshiro 4 , Shinichiro Kawatoko 1,3 , Tomohiro Nagasue 1 , Yuichi Matsuno 1 , Shin Fujioka 1 , Naonori Kawakubo 5 , Kouji Nagata 5 , Tomohiko Moriyama 1,6 , Tatsuro Tajiri 5 , Takehiro Torisu 1 1Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan 2Division of Gastroenterology, Matsuyama Red-cross Hospital, Matsuyama, Japan 3Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan 4Department of Pathology, Matsuyama Red-cross Hospital, Matsuyama, Japan 5Department of Pediatric Surgery, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan 6International Medical Department, Kyushu University Hospital, Fukuoka, Japan Keyword: 若年性ポリープ , Peutz-Jeghers type polyp , 過誤腫性ポリープ , IMGP , inflammatory myoglandular polyp , NBI pp.171-181
Published Date 2024/2/25
DOI https://doi.org/10.11477/mf.1403203469
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 In this retrospective study, we reviewed reports of colonoscopies performed between 2000 and 2023 in our institutions and identified patients who underwent endoscopic or surgical resection for colorectal solitary JPs(juvenile polyps), colorectal solitary PJPs(Peutz−Jeghers polyps), and IMGPs(inflammatory myoglandular polyps). The clinicopathologic findings of 101, 29, and 18 patients with JPs, PJPs, and IMGPs, respectively, were compared. The patients with JPs were younger than those with PJPs. JPs frequently exhibited erosions, whitish exudates, chicken skin mucosa, expanded crypt openings, decreased marginal crypt epithelial density, and increase of thin vessels by magnifying M-NBI(narrow-band imaging endoscopy)and a star-like pit pattern and decreased pit density by MCE(magnifying chromoendoscopy). PJPs frequently exhibited a lobular surface and branching surface pattern by M-NBI or MCE. IMGPs frequently exhibited chicken skin mucosa, expanded crypt openings, and increase of thin vessels by M-NBI and a star-like pit pattern by MCE. In conclusions, PJPs had endoscopic features distinct from JPs and IMGPs. Also, endoscopic findings of JPs were similar to those of IMGPs. However, the higher rates of polyps with whitish exudates, decreased marginal crypt epithelial density by M-NBI, and the higher rate of pit density by MCE observed in patients with JPs might help differentiate JPs from IMGPs.


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