A device and method for viewing a body lumen are provided. An assembly of a capsule endoscope and an endoscope is inserted into a body lumen. The capsule endoscope is positioned within the body lumen at a predetermined distance from the endoscope, and images are obtained from opposite sides of a desired location in the body lumen. In vivo procedures may be performed, while images of the procedure are obtained from opposite sides of the procedure location.
