A control method includes: receiving, from a case search system, a plurality of data including a plurality of images corresponding to a plurality of similar medical images having a certain similarity with a target medical image to be interpreted； displaying on a display a display screen including a first display area that displays thumbnails of the plurality of similar medical images； sensing one similar medical image selected from among the plurality of similar medical images displayed as thumbnails in the first display area； if the one selected similar medical image is a diffuse lesion, displaying the other plurality of medical images in a second display area included on the display screen； and if the one selected similar medical image is a localized lesion, successively displaying, in the second display area and in a first direction, the plurality of medical images including the localized lesion.
