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Dr Denis Cheong Mun Onn is a general surgeon with over 20 years of experience, providing specialised care at his Mount Elizabeth Novena and Mount Elizabeth clinics. He focuses on colorectal conditions such as haemorrhoids, fistulas, and fissures, as well as laparoscopic treatment for colon and rectal cancers, gallbladder disorders, hernias, and thyroid conditions. Dr Cheong trained at top international centres, including the Cleveland Clinic, St Mark’s Hospital, and the Karolinska Institute, through multiple HMDP fellowships. At Tan Tock Seng Hospital, he led the development of colorectal services and helped establish the Digestive Disease Centre and Oncology Services.