A medical procedure where a doctor uses a flexible camera tube passed down through the mouth and stomach to directly examine the duodenum and look for ulcers, bleeding, or other problems.
From duodenum plus -scopy (from Greek skopein, 'to look at' or 'to examine'). The -scopy suffix is used for medical procedures involving looking inside body structures with specialized instruments.
Upper endoscopy (which includes duodenoscopy) is actually more accurate than any imaging test for finding bleeding sources—doctors can see tissue color changes and vessels that X-rays and ultrasounds completely miss, and they can treat problems right away.
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