Endoscopy vs Colonoscopy vs Capsule Endoscopy 1. Endoscopy : involves using a flexible tube with a camera to look inside the upper part of the digestive system, including the esophagus, stomach, and the beginning of the small intestine. It's needed when you have symptoms like persistent heartburn, difficulty swallowing, or stomach pain. 2. Colonoscopy : uses a similar flexible tube with a camera to examine the lower part of the digestive system, specifically the colon and rectum. It's needed for

Capsule endoscopy in gastrointestinal disease: Evaluation, diagnosis, and treatment