evaluation of diagnostic values of ema and ber-ep4 in distinction between basal cell carcinoma and squamous cell carcinoma of the skin

Authors

parvin rajabi

mohammad aboutalebdokht

mitra heidarpour

ali asilian

fatemeh rajabi

abstract

background and objective: basal cell carcinoma (bcc) and squamous cell carcinoma (scc) are two common tumors of the skin. in some cases, distinction between bcc and scc can be difficult. this study aimed to clarify this uncertainty through immunohistochemical analysis. in this respect, epithelial membrane antigen (ema) and ber-ep4 are the two immunohistochemical markers on which we focus in differentiating skin bcc from scc. materials and methods: archived paraffin-embedded tissue samples of bcc (n = 40) and scc (n=40) were stained immunohistochemically using ber-ep4 and ema antibodies. results: it was found out that 37 (92.5%) out of the bcc samples stained positive for ber-ep4 and 2.5% of scc samples showed positive staining. the majority of scc group (37 out of 40) expressed ema, while 5% of bcc samples showed positive staining. conclusion: distinction of bcc and scc of the skin can be readily achieved through ber-ep4 and ema immunohistochemical markers. regarding potential false positive and negative results through immunostaining techniques, we may recommend the use of these two antibodies together.

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Journal title:
iranian journal of pathology

Publisher: iranian society of pathology

ISSN 1735-5303

volume 2

issue 1 2007

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