Clinical Research Directory

Inclusion Criteria: 1. They require elective colonoscopy for colorectal cancer screening or polyp surveillance, or investigation of symptoms (e.g. anemia, change of bowel habit, abdominal pain); 2. Aged ≥18 years old; 3. Written informed consent obtained. Exclusion Criteria: 1. Contraindications to colonoscopy (e.g. perforation, intestinal obstruction, unstable cardiopulmonary status); 2. Contraindication to polyp resection (e.g. active gastrointestinal bleeding, uninterrupted anticoagulation or dual antiplatelets); 3. Known colorectal cancer or adenoma for staged procedure; 4. Previous colonic resection; 5. Personal history of colorectal cancer; 6. Personal history of polyposis syndrome; 7. Personal history of inflammatory bowel disease; 8. Known pregnancy or lactation; 9. Advanced comorbid conditions (defined as American Society of Anesthesiologists grade 4 or above);