The role of S100A9 in distinguishing malignant melanoma from dysplastic and common nevi

Increased S A expression has been found at the deep invasive edge of melanomas as well as in the upper layers of the epidermis above and bordering melanomas However no studies to date have examined the potential clinical utility of using S A to differentiate between nevi and melanoma The aim of this study is to examine S A IHC expression in common nevi dysplastic nevi and melanomas in order to determine whether the S A marker could help distinguish these lesions