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What are possible complications of upper endoscopy?

Although complications can occur after upper endoscopy, they are rare when doctors who are specially trained and experienced in this procedure perform the test. Bleeding can occur at a biopsy site or where a polyp was removed, but it's usually minimal and rarely requires follow-up. Perforation (a hole or tear in the gastrointestinal tract lining) may require surgery but this is a very uncommon complication. Some patients might have a reaction to the sedatives or complications from heart or lung disease. Although complications after upper endoscopy are very uncommon, it's important to recognize early signs of possible complications. Contact your doctor immediately if you have a fever after the test or if you notice trouble swallowing or increasing throat, chest or abdominal pain, or bleeding, including black stools. Note that bleeding can occur several days after the procedure. If you have any concerns about a possible complication, it is always best to contact your doctor right away. 

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.