From a database for reports, storage-location information paired with the characteristics information of this patient's medical image is searched. Then, the medical image stored in a storage location corresponding to the searched storage-location information is acquired, and this acquired medical image is simultaneously displayed with a patient's medical image. In this database, established-disease-name information that includes those with “no findings” or post-surgery-image-identifying information is stored by corresponding to the storage-location information, and the database is searched based on the established-disease-name information that indicates no findings or post-surgery-image-identifying information, and then corresponding medical images are acquired and simultaneously displayed with the patient's medical image.