What does enteroscopy primarily examine?

Enteroscopy primarily examines the small intestine. This type of endoscopic procedure is specifically designed to visualize the mucosal surface of the small bowel, which can often be more challenging to assess than other parts of the gastrointestinal tract due to its length and location. Enteroscopy utilizes specialized instruments that allow for the observation, diagnosis, and treatment of various conditions affecting the small intestine, such as Crohn's disease, tumors, or bleeding.

In contrast, the other options focus on different areas of the gastrointestinal system. The large bowel is evaluated through techniques such as colonoscopy, the stomach is assessed with gastroscopy, and examination of the rectum typically involves proctoscopy or sigmoidoscopy. Therefore, these procedures and instruments are not suitable for the purpose of enteroscopy, which is dedicated specifically to the exploration of the small intestine.