An endoscope is readily inserted into the oesophagus during an upper endoscopy so the doctor may see the oesophagus, stomach, and upper part of the small intestine. Likewise, endoscopes can be inserted via the rectum into the large intestine (colon) to inspect this region of the gut. Depending on how far up the colon is inspected, this technique is referred to as a sigmoidoscopy or a colonoscopy.
Endoscopic retrograde cholangiopancreatography, or ERCP, is a specialized form of endoscopy that enables imaging of the pancreas, gallbladder, and other tissues. ERCP is also utilized for biopsies and the implantation of stents. Upper endoscopy and ultrasound examination are combined to create endoscopic ultrasound, or EUS, which provides images and data about various digestive system regions.
A colonoscopy is a form of endoscopy used by doctors to screen for and prevent colorectal cancer. Your doctor may remove growths referred to as polyps during a colonoscopy. Cancer could spread from polyps if they are not removed. Your doctor will advise a particular endoscopy based on the body part being examined.
In addition, your doctor might perform a biopsy (tissue removal) using an endoscope to check for the presence of disease. A digestive system issue may also be treated using endoscopy. For instance, the endoscope may be able to stop bleeding by passing devices through it in addition to detecting any active bleeding from an ulcer. Polyps in the colon can be removed with a scope to stop colon cancer from growing. Additionally, gallstones that have entered the bile duct from outside the gallbladder can be removed with ERCP
Endoscopy is generally a safe procedure. There are, however, some dangers associated. Risks vary according to the area being looked at.