1. A medical procedure support system, comprising: an endoscope for obtaining images of an internal part of the body cavity of a subject; an endoscopic image creating unit for creating an endoscopic image obtained by the endoscope; an image reading unit for reading a virtual image relating to the subject and a reference image relating to the virtual image; a superimposition commanding unit for commanding to superimpose the reference image on at least one of the virtual image and the endoscopic image; and a combined image creating unit for performing the superimposition of the reference image data commanded by the superimposition commanding unit and creating a combined image thereof.