KRT5 and cancer: Moreover, the vessel invasion was revealed in some part of the lesion and metastatic carcinoma was present in twelve of twenty-six lymph nodes (Fig. 2E,F).The results of IHC showed the cancer cells were positive for CKpan, P63, P40, CK5/6, and P16 (Fig. 3A–D), but negative for CK7, CK20, CDX2, MLH1, MSH2, MSH6, and PMS2.The Ki67-labeling index reached 80% in the most concentrated spot.