lichen nitidus
Histologic Features
- Focal parakeratosis
- A thinned overlying epidermis
- Vacuolar alteration of basal layer
- Widened dermal papillae containing a single tubercle consisting of many epithelioid histiocytes, multinucleated giant cells and scattered lymphocytes
- Adjacent symmetrical epithelial collarettes
- Pigment incontinence
- A sparse superficial perivascular lymphohistiocytic infiltrate
Updated Wednesday, July 31, 2013 8:30:48 PM