Image observation reports and medical images are displayed correlated to each other. A second keyword group is obtained, by detecting phrases that match keywords of a first keyword group that represent organs or pathologies from within image observation reports. The organs or pathologies represented by the first keyword group are automatically detected from within medical images, and a third keyword group that includes keywords corresponding to the detected organs or pathologies is obtained. Common keywords that match among keywords within the second and third keyword groups are obtained. Link data that correlates the organs or pathologies corresponding to the common keywords are generated for each common keyword. The common keywords and indicia that represent the organs or pathologies corresponding to the common keywords are displayed correlated to each other.