Outcome of Colonoscopy Screening and Surveillance

Investigator's goal is to collect data from the endoscopy reports and clinic station reports to complete a descriptive analysis of the demographics, colonoscopy procedure performance, and assess the type of benign colon polyps detected during screening and surveillance from 02/01/2000 - 12/31/2020. Specific variable to be reviewed: Patient Demographics: Age, Sex, Race, Height, Weight, BMI (patient privacy will be acknowledged). Indications for Colonoscopy (screening, surveillance, symptoms or tertiary referral [EMR]) Comorbid conditions: , cancer and surgical history, medical conditions, Colonoscopy procedure; quality of colon preparation (using the Boston Bowel Preparation Scale) 0 - 3 for each section of the colon (Ascending, Transverse, Descending and Total Colon) , cecal intubation rate, cecal intubation and total procedure time, type of colonoscope (if CO2 was used in the procedure and techniques for colonoscope insertion, including position changes. Examination findings: number of polyps and nature of polyps removed (site, size, surface, vascular pattern); type of polyp removed (serrated and sessile (flat) ; optical features and histology of polyps. Resection techniques: biopsy, snare resection, endoscopic mucosal resection etc. Including Pathology report findings so that a comparison can be made of the optical features and actual pathology report. Outcomes of colonoscopy: adenoma detections (tubular and villous), cancer and quality metrics. Outcome of colonoscopy: Complications (Bleeding and performance).