Association of second surveillance colonoscopy findings with index and first surveillance colonoscopy results. Issue 5 (28th June 2020)

• Record Type: Journal Article
• Authors: 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
• Is Part Of: Journal of digestive diseases. Volume 21:Issue 5(2020:May)
• Page Start: 272
• Page End: 278
• Publication Date: 2020-06-28
• Subjects: adenomatous polyps -- colonoscopy -- second surveillance -- polypectomy -- surveillance interval; Digestive organs -- Diseases -- Periodicals; Gastroenterology -- Periodicals; 616.3
• DOI: 10.1111/1751-2980.12869
• Languages: English
• ISSNs: 1751-2972

Abstract

Abstract : 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.