CK18 was expressed in ordinary epithelial cells of most organs but absent in usual squamous epithelium. at the least an occasional weak CK18 positivity was noticed in 90 of 115 (seventy eight.three%) tumor forms. broad-unfold CK18 positivity was viewed in 37 (31.9%) of tumor entities, together with adenocarcinomas from the lung, prostate, colon and