Study on the Association Between Serrated Polyps and Metachronous Advanced Colorectal Neoplastic Lesions

Trial statusNot yet recruiting
Trial phaseNot listed
Trial typeObservational
Biological sexAll
Age18+
SponsorChanghai Hospital

About this trial

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

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

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.

Disqualifiers

Incomplete colonoscopy or failed cecal intubation;Inadequate bowel preparation, defined as a Boston Bowel Preparation Scale (BBPS) score < 6 or a score < 2 in any bowel segment;Withdrawal time < 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.

Trial population

Patients who underwent at least two surveillance colonoscopies at the Digestive Endoscopy Center of Shanghai Changhai Hospital between 2000 and 2025 were enrolled as study participants

Trial design

Design model

Cohort

Time perspective

Retrospective

Treatments tested in this trial

Not listed

Trial groups

750 Participants
are grouped into 2 trial groups
Group A: Patients with serrated polyps at index colonoscopy and ACN at surveillance
Group B: Patients with serrated polyps at index colonoscopy and no ACN at surveillance

Trial outcomes

Primary outcomes

1

The occurrence of metachronous ACN

Time frame
At least 6 months after index colonoscopy

Secondary outcomes

Other outcomes

Locations

This trial has no locations.

Sponsors and contacts

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