NODULAR AND DIFFUSE DERMATITIS
NODULAR - HISITOCYTES PREDOMINATE - Palisaded
| In center of
palisades: Mucin |
Granuloma annulare |
| Degenerated collagen early, thickened bundles late | Necrobiosis lipoidica |
| Degenerated collagen, chlesterol clefts, lipophges | Necrobiotic xanthogranuloma |
| Degenerated collagen, fibrin, nuclear "dust" of neutrophis, ghost of venule in center | SLE Rheumatoid disease |
| Fibrin | Rhumatoid nodule |
| Urate | Gout |
| Vasculitis,fibrin, necrosis | Papulonecrotic tuberculid |
| Collagen bundlesdiffrentfrom normal ones | Zyderma (bovine collagen) reaction |