CCL22 and endometrium neoplasm: Immunohistochemical staining of CCL22 revealed three different areas of expression: 1) the epithelial, endometrial tumor cells showed uniform levels of CCL22 (Fig. 1A); 2) intratumoral and peritumoral stromal or myometrial areas (S/M) were CCL22-positive (CCL22+) without association to specific cells (Fig. 1B).