Case Report
A Case of Pyoderma Gangrenosum Misdiagnosed as Necrotizing Infection: A Potential Diagnostic Catastrophe
Table 2
Etiologies of skin lesions that can mimic pyoderma gangrenosum.
| Infectious | Noninfectious |
| Atypical mycobacteria | Vascular | Mycobacterium marinum | Polyarteritis nodosa | Mycobacterium ulcerans | ANCA-associated vasculitis | Tuberculosis (cutaneous) | Cryoglobulinemic vasculitis | Leishmaniasis (cutaneous) | Venous stasis | Ecthyma gangrenosum | Thrombophilia | Anthrax (cutaneous) | Antiphospholipid syndrome | Syphilitic gumma | Malignancy | Deep fungal infections | Squamous/basal cell carcinoma | Sporotrichosis | Cutaneous T-cell lymphoma | Zygomycosis | Drug-induced/toxin | Aspergillosis (primary cutaneous) | Cutaneous lupus (hydralazine, TNF-alpha inhibitors) | Penicilliosis (HIV with CD4 < 100/L) | Hydroxyurea | Injection drug use with secondary infection | Venomous bite (brown recluse spider) |
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