Capsule endoscopy Intriguing way of examining the gastrointestinal tract. Its essence is quite simple - a person swallows a capsule with a built-in camera shooting video. It passes the esophagus, stomach and all parts of the intestine. However, this method is not highly effective — no biopsy (a piece of the organ for examination) can be taken, the view is frequently poor, and chances are that the capsule will get stuck. These disadvantages could disappear if the capsule could be controlled☝🏻 Such devices exist, but they're quite rare.