A long, thin medical instrument with a camera and light at the tip, used to examine the inside of the stomach and upper digestive tract.
From Greek 'gastro-' (stomach) + 'scope' (to view or examine). The instrument lets doctors see inside the stomach without surgery.
Gastroscopes use fiber optic technology—the same light-bending technology that carries internet signals through cables—to transmit images from inside your stomach to a screen!
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