[Calcific uremic arteriolopathy in hemodialysis patient, review of literature through five cases reports].

Calcific uremic arteriolopathy, also called calciphylaxis, is a rare and severe disorder that presents with skin ischemia and necrosis, sometimes it presents with systemic necrosis, the process is secondary to the obliteration of the arterioles first by sub-intimal calcium deposits and then by thrombosis. These lesions can often lead to death due to infectious complications and comorbidities such as diabetes, obesity, arteritis, diffuse vascular calcifications, heart disease and undernutrition. The diagnosis is suggested by the characteristic ischemic skin lesions and their distribution, often bilateral and painful, associeted with calcific uremic arteriolopathy risk factors (phosphocalcic abnormalities, anti-vitamin K). The presence of radiological vascular calcifications is highly suggesting the diagnosis, but remains not very specific. The indication of skin biopsy is rare and reserved for difficult diagnoses. The goals of treatment are: reduce the extension of calcification and treatment of mineral and bone metabolism disorders of end-stage renal disease, dialysis adequacy, local treatment of skin lesions, tissue oxygenation, pain management, discontinuation and contraindication of medications that may contribute to the disorder. We propose to discuss it from a review of the literature and illustrate it with five clinical cases.