Clarence Kerrison is a Gastroenterologist based in Sydney, NSW, Australia.
He works with people who need help with the gut, especially problems that affect the bowel and the upper stomach. Many visits start because of symptoms like ongoing bowel changes, bleeding, pain, or ongoing worry about what’s going on. In other cases, people come in after tests show they need a closer look.
Clarence’s work also includes endoscopy and colonoscopy, which are common ways to check what’s happening inside. For some patients, this might be to look at colorectal polyps. Polyps can be small and harmless, but they can also need treatment or follow-up, depending on what they are like. In many cases, removing or checking polyps early helps reduce future problems.
He also looks after patients where colorectal cancer or stomach cancer is suspected or being followed up. Getting the right test at the right time matters. Endoscopy and colonoscopy can help doctors see areas directly and take samples when needed, so results are clearer.
People often feel a bit nervous about these appointments. Clarence keeps things practical and calm. He explains what the procedure is for, how it’s done, and what to expect on the day. If you have questions about preparation, timing, or recovery, he helps you sort it out before you go ahead.
In day-to-day care, he focuses on making sure patients understand the next steps after results come back. Sometimes it’s about monitoring and follow-up. At other times, it’s about planning treatment or getting extra tests to confirm what’s happening.
Clarence Kerrison works in gastroenterology services in Sydney, and his patients include adults who want clear guidance about bowel and stomach health. Over time, that can mean supporting people through investigations, follow-up appointments, and ongoing care after a diagnosis.
He stays up to date with how endoscopy and colonoscopy are used in real clinical practice, including safer ways to investigate the bowel and stomach. The aim is simple: get accurate information, then make a sensible plan from there.
For care in Sydney, Clarence is available for gastroenterology appointments and procedures related to colorectal polyps, endoscopy, colonoscopy, colorectal cancer, and stomach cancer.