actinic keratosis
Histologic Features
- Thick parakeratosis alternating with orthokeratosis
- Tall columns of parakeratosis
- Buds of atypical keratinocytes emanating from the epidermis
- Atypia of the basal layer characterized by hyperchromatic crowded nuclei
- A dense lymphohistiocytic infiltrate around the superficial blood vessels
- Prominent solar elastosis of the upper dermis
Updated Wednesday, July 31, 2013 8:30:48 PM