[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100645225":3},{"organization":4,"armGroups":7,"interventions":10,"overallOfficials":10,"centralContacts":13,"locations":10,"responsibleParty":19,"collaborators":10,"id":21,"slug":10,"hasResults":22,"nctId":23,"briefTitle":24,"officialTitle":25,"acronym":10,"eligibilityCriteria":26,"healthyVolunteers":22,"sex":27,"minAge":28,"maxAge":10,"enrollmentInfo":29,"targetDuration":10,"studyType":32,"phases":10,"briefSummary":33,"conditions":34,"keywords":10,"overallStatus":37,"whyStopped":10,"lastUpdateSubmitDate":38,"lastUpdatePostDateStruct":39,"startDateStruct":42,"completionDateStruct":44,"leadSponsor":46,"locationsCount":10},{"fullName":5,"class":6},"Changhai Hospital","OTHER",[8,11],{"label":9,"type":10,"description":10,"interventionNames":10},"Patients with serrated polyps at index colonoscopy and ACN at surveillance",null,{"label":12,"type":10,"description":10,"interventionNames":10},"Patients with serrated polyps at index colonoscopy and no ACN at surveillance",[14],{"name":15,"role":16,"phone":17,"phoneExt":10,"email":18},"Yu Bai, M.D","CONTACT","+8619280762294","19851132340@163.com",{"type":20,"investigatorFullName":10,"investigatorTitle":10,"investigatorAffiliation":10,"oldNameTitle":10,"oldOrganization":10},"SPONSOR","100645225",false,"NCT07678788","Study on the Association Between Serrated Polyps and Metachronous Advanced Colorectal Neoplastic Lesions","Risk Factors for Metachronous Advanced Colorectal Lesions After Endoscopic Resection of Serrated Lesions","Inclusion Criteria:\n\n* Adult patients aged \\> 18 years;At least one SP detected during the index colonoscopy and pathologically confirmed as TSA or SSL (according to the 2019 WHO classification criteria);Underwent complete polypectomy during the index colonoscopy;Received regular follow-up at Changhai Hospital, with an interval of ≥ 6 months between the index and follow-up colonoscopies;Complete clinical and pathological data.\n\nExclusion Criteria:\n\n* Incomplete colonoscopy or failed cecal intubation;Inadequate bowel preparation, defined as a Boston Bowel Preparation Scale (BBPS) score \\\u003C 6 or a score \\\u003C 2 in any bowel segment;Withdrawal time \\\u003C 6 minutes;Diagnosis of hereditary cancer syndromes, such as familial adenomatous polyposis (FAP) or Lynch syndrome;Concurrent inflammatory bowel disease (IBD) or indeterminate colitis;History of colorectal cancer or other malignancies;Incomplete clinical or pathological records.","ALL","18 Years",{"count":30,"type":31},750,"ESTIMATED","OBSERVATIONAL","This study aims to explore the risk factors associated with the development of ACN and same-site ACN in patients with SP, thereby informing the optimization of clinical surveillance strategies",[35,36],"Sessile Serrated Lesion","Serrated Polyp","NOT_YET_RECRUITING","2026-06-25",{"date":40,"type":41},"2026-07-01","ACTUAL",{"date":43,"type":31},"2026-06-01",{"date":45,"type":31},"2026-12-01",{"name":5,"class":6}]