Complications of Upper Endoscopy

What are the Possible Complications of Upper Endoscopy?

Endoscopy is generally safe.  Complications can occur, but are rare when the test is performed by physicians with specialized training and experience in this procedure.  Bleeding may occur from a biopsy site or where a polyp was removed.  It is usually minimal and rarely requires blood transfusions or surgery.  Localized irritation of the vein where medication was injected may rarely cause a tender lump lasting for several weeks, but this will go away eventually.  Applying heat packs or hot moist towels may help relieve discomfort.  Major complications, e.g., perforation (a tear that might require surgery for repair) are very uncommon.