1. A diagnostic imaging support device comprising: image data acquisition portion that acquires image data of high magnification of sample tissue; image classifying portion that generates image data of low magnification from the image data of high magnification acquired by the image data acquisition portion, and classifies the generated image data of low magnification into group by each image data pattern of a plurality of pathological tissue; and image evaluating portion that evaluates whether or not the image data of high magnification is the pathological tissue of the classified group, the image data of high magnification being a base of the image data of low magnification classified by the image classifying portion.