Endoscopy has a much lower risk of bleeding and infection than open surgery. Still, endoscopy is a medical procedure, so it has some risk of bleeding, infection, and other rare complications such as:

What Are the Risks of an Endoscopy?
• chest pain
• damage to your organs, including possible perforation
• fever
• persistent pain in the area of endoscopy
• redness and swelling at the incision site

The risks for each type depend on the location of the procedure and your own condition. For example, dark-colored stools, vomiting, and difficulty swallowing after a colonoscopy could indicate that something is wrong.

Ask your doctors about symptoms to look out for following your endoscopy.