Inflammatory linear verrucose epidermal nevus. A pathologic study.

We saw three patients with inflammatory linear verrucose epidermal nevus (ILVEN). The purpose of this study is to better delineate the histopathologic features of this type of nevus. In fact, in all three cases very particular, specific histologic lesions have been noted that permit us to better distinguish this recently outlined entity. The histologic features were depressed, cup-like areas of hyper-granulosis with overlying orthokeratotic hyperkeratosis, alternating (with sharp dermacation) with raised, level areas of agranulosis with overlying parakeratotic hyperkeratosis.