PCNA and neoplasm: Markers such as vascular endothelial growth factor A (VEGF-A), granulocyte colony-stimulating factor (G-CSF), chemokine (C-X-C motif) ligand 1 (CXCL1), β- catenin, proliferating cell nuclear antigen (PCNA), a marker of proliferation Ki-67, caspase 3 and epidermal growth factor (EGF) are found in the literature as well as are present in our collected data, and they are important as representative of tumor progression.