Histology of InflammatoryLinearVerrucousEpidermalNaevus
In ILVEN, sections show skin with psoriasiformepidermalhyperplasia with alternating orthokeratosis and parakeratosis (figure 1). The orthokeratotic areas overlie depressed epidermis with marked hypergranulosis (figure 2). The zones of parakeratosis overlie hypogranulosis (figure 3). There are spongioticepidermal changes and small microvesicles. There is a mixed dermalinflammatory response (figure 4).