pseudocarcinomatous hyperplasia
Histologic Features
- Parakeratosis or ulcerations on the surface
- Irregularly-shaped bulbous epidermal hyperplasia with jagged and angular borders emanating from the adnexal epithelium
- Squamous epithelium characterized by minimal to moderate atypia but not striking atypia
- Sparing of the interadnexal epidermis
- A sparse to dense lichenoid infiltrate
- Large fibroblasts-histiocytes present adjacent to the basement membrane zone
Updated Wednesday, July 31, 2013 8:30:48 PM