PANNICULITIS
MOSTLY SEPTAL
| Vasculitis | Small vessel | Venule | Leukocytoclastic vasculitis |
| Larege vessel | Vein | Thrombophlebitis | |
| Artery | Polyarteritis nodosa | ||
| No Vasculitis | Lymphocytes and plasma cells | Granulomatous inflammation in septa | Necrobiosis lipoidica |
| No granulomatous inflammation in septa | Scleroderma | ||
| Histicoytes mostly (granulomatous) | Mucinin center of palisaded granulomas | Granuloma annulare, subcutaneous | |
| Fibrinin center of palisaded granulomas | Rheumatoid nodule | ||
| Extensive degeneration of collagen, lipophages, cholesterol clefts, necrosis of inflammatory cells in center of palisaded granulomas | Necrobiotic xanthogranuloma | ||
| Without mucin, fibrin, or degeneration of collagen but with radial granulomas in septa | Erythema nodosum |