actinic keratosis, ulcerated
Histologic Features
- A scale crust on the surface
- Shallow erosion of the epidermis
- Nubbins of epidermis showing atypical hyperchromatic keratinocytes at the ulcer base
- Acute and chronic inflammation at the base
- Absence of full-thickness atypia of adjacent epidermis
- Lack of evidence for a melanocytic proliferation
Updated Wednesday, July 31, 2013 8:30:48 PM