©2009 European Journal of Histochemistry

Basal cell carcinoma (BCC) is a very common malignant skin tumor that rarely metastatizes, but is often locally aggressive. Several factors, like large size (more than 3 cm), exposure to ultraviolet rays, histological variants, level of infiltration and perineural or perivascular invasion, are associated with a more aggressive clinical course. These morphological features seem to be more determinant in mideface localized BCC, which fre-quently show a significantly higher recurrence rate. An immunohistochemical profile, characterized by reactivity of tumor cells for p53, Ki67 and alpha-SMA has been associat-ed with a more aggressive behaviour in large BCCs. The aim of this study was to verify if also little (<3 cm) basal cell carcino-mas can express immunohistochemical markers typical for an aggressive behaviour