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Developmental Progression from SSL(Sessile Serrated Lesion)to Cancer Bunichiro Kato 1 , Hiro-o Matsushita 1 , Kenjiro Yoshikawa 1 , Yoshihito Tanaka 1 , Haruka Yorozu 1 , Ayumi Taguchi 1 , Hiroshi Hashimoto 1 , Kouta Yamazaki 1 , Ryo Takagi 1 , Munehiro Yamada 1 , Takuo Tokairin 2 , Katsuhiko Enomoto 2 , Tamotsu Sugai 3 , Hiro-o Yamano 4 , Hiromu Suzuki 5 1Department of Digestive Disease Center, Akita Red Cross Hospital, Akita, Japan 2Department of Diagnostic Pathology, Akita Red Cross Hospital, Akita, Japan 3Department of Molecular Diagnostic Pathology, Iwate Medical University, School of Medicine, Morioka, Japan 4Department of Gastroenterology and Hepatology, Sapporo Medical University School of Medicine, Sapporo, Japan 5Department of Molecular Biology, Sapporo Medical University School of Medicine, Sapporo, Japan Keyword: 拡大内視鏡 , SSA/P , SSL , 開II型 , translational research pp.189-198
Published Date 2023/2/25
DOI https://doi.org/10.11477/mf.1403203114
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 SSA/P(sessile serrated adenoma/polyp)was specified as having malignant potential as SSA/P with cytological dysplasia by the WHO classification of tumours in 2010. Subsequently, in the WHO classification of tumours in 2019, the name SSA/P was eliminated and SSL was added instead. In the new classification, the histopathological diagnostic criteria also differed from the old classification, resulting in chaos in terms of clinical, as well as histopathological treatment. This study presented the SSA/P-related lesions observed at our center and discussed the progression of SSA/P into cancer. While some lesions did not change during follow-up, others showed progressive changes that led to a cancer diagnosis. In the cases with changes, it was possible to recognize the changes in the pit pattern prior to erythema and double-stage elevation, which are considered to be dysplastic characteristics. Therefore, it was considered necessary to perform detailed and careful observation using a magnifying endoscope in order to capture SSA/P's developmental progress endoscopically.


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電子版ISSN 1882-1219 印刷版ISSN 0536-2180 医学書院

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