An image interpretation report creating apparatus for retrieving a key image corresponding to that in the previous examination from among images taken in this examination to display it on an image display terminal. The apparatus includes: a follow-up observation examination determining unit for determining whether this examination is an object of follow-up observation; a previous report determining unit for determining, as previous report data, report data on the same patient from among the report data; a previous report data acquiring unit for acquiring the previous report data; an image data acquiring unit for acquiring image data at this time; a key image estimating unit for estimating a key image at a slice position corresponding to the previous examination based on the previous report data; and an image data output unit for outputting image data representing examination images containing the key image to the image display terminal.