1. A medical information-display apparatus comprising: a display unit that displays a first display area and a second display area; and a display control unit that controls a display of medical information onto the display unit, wherein the display control unit causes the display unit to display in the first display area a thumbnail of a medical image to be read, and when receiving an operation for selecting a thumbnail in the first display area and displaying the selected thumbnail in the second display area as a thumbnail of a medical image to be used for image reading, the display control unit specifies, based on attribution information about a first medical image corresponding to the thumbnail displayed in the second display area, a second medical image to be a comparison subject with the first medical image from among medical images taken through one examination and other examinations of a patient of the first medical image, and causes the display unit to display a thumbnail of the second medical image.