SLC4A1 and neoplasm: By IHC, the tumor cells were diffusely positive for TLE-1 (Fig. 4a) and vimentin and focally positive for epithelial membrane antigen, AE1/3 (Fig. 4b), Cam5.2, SATB2, and CD34 (Fig. 4c) (all in less than 10% tumor cells).