“…The markers of myoepithelial differentiation such as SMA, S100, P63 and vimentin may be expressed in BCAC particularly by cells at the periphery of tumour nests (Williams et al, 1993;Kim et al, 1997;Andreadis et al, 2005;Farrell and Chang, 2007). CEA stain was negative in the present case as well as in several other case reports (Raslan et al, 1995;Parashar et al, 2007;Sarafraz et al, 2015). Although SMA is a marker of myoepithelial differentiation, it has been reported as negative in several reports, including the present one (Andreadis et al, 2005;Farrell and Chang, 2007;Parashar et al, 2007;Jung et al, 2013).…”