Diagnostic challenges in a patient with calciphylaxia - a case report.

Calciphylaxis is a condition with unclear etiopathogeny with vascular calcifications and thrombotic occlusion that lead to necrotic lesions. It is usually described in patients with end-stage renal disease (ESRD), but also in other conditions. The mortality rate is high, due to sepsis and internal organ failure. We present the case of a patient with multiple comorbidities (ESRD, diabetes, hypertension, Mönckeberg's sclerosis) with problems of differential diagnostic due to the necrotic lesions that mislead initially to systemic lupus erythematosus (SLE) with necrotizing vasculitis.