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Background Gallbladder polyps are encountered in 5% of ultrasound scans and continue to remain a dilemma in terms of management. Very few polyps progress to cancer. However, most cancerous polyps are usually found at an advanced stage. It is therefore important to identify the premalignant polyps. There is a lack of national consensus in UK for surveillance of gallbladder polyps. Many trusts in the UK either adopt the European guidelines or formulate local protocols.  We aim to present our findings based on our local surveillance policy existent during the study period with a view to recommending new local guidelines. Methods A search from our radiology database being coded to gallbladder polyp identified patients. We identified 431 patients from 2017 – 2019 who had a total of 1014 scans. The data was collected from local hospital IT databases in terms of variables such as number of scans, polyp size, number of polyps, progression to surgery or discharge from surveillance and histology. The data was analysed on excel platform. Results Patient demographics revealed an incidence of 54% in females (males 46%) with an average age of 59.7 years. Pain was the dominant symptom prompting the first scan (48%). An average of 2.3 scans were performed per patient. 45% of the polyps were less than 5mm. Overall, 22% polyps demonstrated interval growth. Only 15% of polyps less than 5mm demonstrated interval growth and none required cholecystectomy.  6% patients proceeded to surgery mainly for symptoms (46%) compared to polyp progression (1.5%). No malignancy was identified in this study. 43% of patients with polyp diagnosis in primary care had no identified surveillance plan. Conclusions Our study demonstrates a low incidence of polyp progression. We would recommend stopping annual surveillance after 2 years from the index scan for multiple small (&amp;lt;5mm) polyps with little or no progression but continue with annual surveillance for polyps greater than 5mm. We would recommend reserving cholecystectomy for symptomatic polyps and polyps greater than 10mm. There is wide variation in surveillance practice particularly in primary care.  We would recommend sharing the guideline widely with primary care for optimal surveillance.  

P-BN31 Surveillance for Gallbladder polyps at a NHS District General Hospital – a retrospective analysis