Categorized: Abstracts & Presentations

Xanthomatous Lichen Planus-Like Keratosis: An Emerging Clinical Entity?

Lichen planus-like keratosis (LPLK) was first described in 1966 as a lesion that is clinically distinct from lichen planus (LP) but histologically indistinguishable from LP. Clinically, LPLK appears different from LP in that it is usually a single, discrete lesion, measuring 3-10 mm in diameter that can vary from violaceous to pink to crimson in color. The histologic findings of LPLK include a band-like dermal lymphocytic infiltrate obscuring the dermoepidermal junction, associated with acanthosis, hyperkeratosis, hypergranulosis, and dyskeratotic keratinocytes in the basal layer. Here, we present two cases of classic LPLK with prominent foamy cells in the lichenoid infiltrate.