1. A method to automatically display bone variations in medical image data, comprising: providing a medical image data set to a computerized processor, said medical image data set representing an examination region of a subject that comprises bone regions and bone variation regions within said bone regions; in said processor, implementing a first segmentation of said image data set in which said bone regions in said image data set are automatically segmented and preserved; in said processor, implementing a second segmentation in which said bone variation regions in said segmented and preserved bone regions in said image data set are automatically segmented from the bone regions segmented in said first segmentation and are preserved individually so as to be separable from the preserved segmented bone regions; and displaying said segmented and preserved bone variation regions from said second segmentation at a monitor in communication with said processor.