1. A computer readable recording medium recorded with a diagnosis supporting program for realizing on a computer: a lesion position detecting function for detecting a lesion position from a diagnosis target image; a feature quantity extracting function for extracting image-wise feature quantities of the lesion position detected by said lesion position detecting function; and a reference image retrieving function for retrieving reference images which are image-wise similar to the diagnosis target image out of a database stored with reference images and feature quantities of reference images, based on the feature quantities extracted by said feature quantity extracting function.