ELI5: Explain Like I'm 5

Endoscope

An endoscope is a medical tool that doctors use to look inside your body. It's a long, thin tube with a very small camera and a light at the end. The doctor can insert the endoscope into your body through a small hole, like your mouth or nose, to look at the inside of your body. They can look for any signs of problems and can even take pictures or videos to show something inside.