What is Capsule Endoscopy? Capsule Endoscopy lets your doctor examine the lining of the middle part of your gastrointestinal tract, which includes the three portions of the small intestines (duodenum, jejunum, ileum). These are areas that cannot be reached by traditional upper endoscopy or by a pouchoscopy. Your doctor will give you a pill sized video camera for you to swallow. This camera has its own light source and takes pictures of your small intestines as it passes through. These pictures ...