dermatomyositis
Histologic Features
- Histologic features similar to LE except for miniaturization, characterized by
- A basket-weave cornified layer
- A thin epidermis
- Vacuolar alterations of the basal layer
- Occasional necrotic keratinocytes at the basal layer
- Thickened and smudged basement membrane
- Edema of the papillary dermis
- A sparse lichenoid and superficial perivacular infiltrate of lymphocytes, histiocytes with a few plasma cells
- Widely-dilated small vessels in the upper dermis
- Mucin deposition between collagen bundles
Updated Wednesday, July 31, 2013 8:30:48 PM