Storing a second image reconstructed from a plurality of images, including a first image, and an image reading report that includes a lesion character representing a lesion area in the first image. Associating the lesion character with a position of the lesion area and storing the position in the second image corresponding to the position of the lesion area as a link position. Displaying a link character constituted by the lesion character, a position indicator indicating the link position corresponding to the position of the lesion area represented by the link character, and an association indicator indicating the link character and position indicator in association with each other in the second medical image.