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Association of second surveillance colonoscopy findings with index and first surveillance colonoscopy results
Author(s) -
Okagawa Yutaka,
Sumiyoshi Tetsuya,
Tomita Yusuke,
Uozumi Takeshi,
Iida Reiichi,
Sakano Hiroya,
Tokuchi Kaho,
Jin Takashi,
Yoshida Masahiro,
Fujii Ryoji,
Minagawa Takeyoshi,
Morita Kohtaro,
Yane Kei,
Ihara Hideyuki,
Hirayama Michiaki,
Kondo Hitoshi
Publication year - 2020
Publication title -
journal of digestive diseases
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.684
H-Index - 51
eISSN - 1751-2980
pISSN - 1751-2972
DOI - 10.1111/1751-2980.12869
Subject(s) - medicine , colonoscopy , adenoma , polypectomy , gastroenterology , retrospective cohort study , dysplasia , colorectal cancer , cancer
Objective Although there have been established guidelines for first surveillance colonoscopy (FSC) after a polypectomy, there is no consensus on performing a second surveillance colonoscopy (SSC), especially in Asian countries. This study aimed to investigate the association of SSC findings with index total colonoscopy (TCS) and FSC results. Methods This was a single‐center retrospective cohort study involving 1928 consecutive Japanese patients who had received three or more colonoscopies. High‐risk colonoscopic findings were defined as advanced adenoma (≥10 mm in size, with a villous histology or high‐grade dysplasia) or more than three adenomas, whereas low‐risk findings were defined as one to two non‐advanced adenomas. On the basis of index TCS results, the patients were divided into three groups: no adenomas (NA) (n = 888), low‐risk (LR) (n = 476), and high‐risk (HR) (n = 564) groups, respectively. Results In the NA group, the rate of high‐risk findings on SSC was significantly higher in patients with high‐risk or low‐risk findings on FSC than in those with no adenoma (7.7% and 7.9% vs 2.2%, P < 0.05). Patients in the LR and HR groups with high‐risk findings on FSC had a significantly higher risk on SSC than those with low‐risk findings or no adenoma on FSC (LR group: 28.6%, 9.4%, and 5.9%, respectively, P < 0.01; HR group: 34.5%, 18.8%, and 7.9%, respectively, P < 0.01). Conclusions Index TCS and especially FSC findings were predictive of SSC results. The study results may be useful for determining appropriate intervals for surveillance colonoscopy in Asian countries.