A display (34) provides from digital images of an excised tissue specimen the orientation and location of tissue and regions of interest (cancers). Images of slices through excised specimen are obtained using a confocal microscope (10) to obtain confocal maps to provide a mosaic of images each of which corresponds to a different map element. A macroscopic image of significant map elements and high resolution images of selected elements are provided to locate and mark regions which are cancerous thereby assisting the surgeon to excise such regions.