hypertrophic lichen planus
Histologic Features
- Thick, compact hyperkeratosis
- Hypergranulosis
- Widely-dilated hair follicles with hyperplastic follicular epithelium and rete ridges
- A dense lichenoid infiltrate of lymphohistiocytes at the bases of the hyperplastic epithelium
- Spotty vacuolar alteration of the basal layer
- Coarse collagen and dilated capillaries at the base of the lesion
- Necrotic keratinocytes in varying numbers at the basal layer
Updated Wednesday, July 31, 2013 8:30:48 PM