Adenoma, Sessile Serrated Adenoma
Conditions
Keywords
texture and color enhancement imaging, colonoscopy, adenoma detection rate, sessile serrated lesion detection rate, adenoma miss rate, sessile serrated lesion miss rate
Brief summary
Texture and Color Enhancement Imaging (TXI) is a newly developed image-enhancing endoscopy technology that has show potential in improving detection of colorectal lesions. This multicenter, randomized, tandem trial is aimed at evaluating whether TXI is superior to WLI endoscopy in terms of diagnosis of premalignant lesions.
Interventions
Patients in Group A will undergo colonoscopy with TXI.
Patients in group B will first undergo colonoscopy with TXI and every polyp found should be removed. Then switch to WLI for a second withdrawal to detect lesions that were not observed the first time.
Patients in Group C will undergo colonoscopy with WLI.
Patients in group D will first undergo colonoscopy with WLI and every polyp found should be removed. Then switch to TXI for a second withdrawal to detect lesions that were not observed the first time.
Sponsors
Study design
Eligibility
Inclusion criteria
patients aged 45-85 years and scheduled for screening colonoscopy who provided written informed consent
Exclusion criteria
Surveillance, diagnostic or therapeutic colonoscopy Patients with an already known or suspected colorectal tumour Patients with alarming symptoms and signs, including haematochezia, melena, weight loss or anaemia without specific causes, an abdominal mass and positive digital rectal examination Pregnant or lactating women Patients with gastrointestinal tract obstruction Patients with inflammatory bowel diseases, hereditary CRC syndromes or serrated polyposis syndrome Patients with abnormal blood coagulation or taking antiplatelets or anticoagulants within 7 days before colonoscopy Patients with failed cecal intubation Patients with poor bowel preparation quality that necessitated a second bowel preparation Patients with a history of colonic resection
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| adenoma detection rate | 1 years | the number of patients with one or more adenomas detected and removed divided by the total number of patient |
| sessile serrated lesion detection rate | 1 years | the number of patients with one or more sessile serrated lesions detected and removed divided by the total number of patients |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| adenoma miss rate | 1 years | the number of adenomas detected during the second examination divided by the total number of adenomas detected during the first and second colonoscopy |
| sessile serrated lesion miss rate | 1 years | the number of sessile serrated lesions detected during the second examination divided by the total number of sessile serrated lesions detected during the first and second colonoscopy |