In addition to this, molecular markers, including c-kit expression pattern, c-kit mutations and proliferation indices such as the Ki-67 index, which correlates with the growth fraction of the tumor, and the argyrophilic nucleolus organizer regions (AgNORs) index, which correlates with the proliferation rate of the neoplastic cells, are of particular prognostic importance [6,7,8,9,10,11]. Here, KIT is linked to neoplasm.