MUC1 and extraskeletal myxoid chondrosarcoma: IHC features: PAX-8, CK, EMA, ER and PR were strongly and diffusely expressed in the low-grade EmC component (Figure 5, 6, cases 3 and 4), whereas the UC component was diffusely positive for vimentin, focally positive for CK, EMA, and neuroendocrine markers such as synaptophysin, chromogranin A, and CD 56.