Out of 28 specimens, EpCAM staining upon immunohistochemistry (IHC) of primary tumour biopsies varied: 12 carcinomas showed positive staining for EpCAM in immunohistochemistry (IHC) stainings of the primary tumours, while 10 carcinomas expressed intermediate levels and 6 carcinomas expressed low levels or no EpCAM (Table 1). Here, EPCAM is linked to carcinoma.