granuloma annulare
Histologic Features
- An upper dermal inflammatory process characterized by
- Focal mucinous collagen degeneration surrounded by histiocytes in a palisade
- A few multinucleated giant cells
- Histiocytes between collagen bundles
- A superficial and deep perivascular lymphocytic infiltrate
- Scattered nuclear dust
Updated Wednesday, July 31, 2013 8:30:48 PM