Livedo reticularis and peripheral gangrene associated with primary hyperoxaluria.

We describe a 38-year-old man who developed livedo reticularis and peripheral gangrene after bilateral nephrectomy. Pathologic evaluation revealed extensive crystalline deposits within the walls of subcutaneous blood vessels. The diagnosis of primary hyperoxaluria was established. This case demonstrates that the vasculopathy of primary oxalosis can mimic systemic necrotizing vasculitis.