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Calciphylaxis in two patients with end‐stage renal disease

Fatal calciphylaxis (CPX) occurred in two 71‐year‐old females both requiring haemodialysis for end‐stage renal disease. Case 2 also had an associated follicular lymphoplasmocytoid lymphoma. Although laboratory tests disclosed normal coagulation parameters, this woman had a striking cutaneous histological picture of vessel thrombosis and finally died of disseminated intravascular coagulation. CPX is a rare but potentially life‐threatening complication of renal failure. The clinical picture is primarily characterized by livedoid purpura with subsequent cutaneous ischaemia and painful ulcerations. Cutaneous ischaemic phenomena are sustained by a progressive process of vascular calcification and thrombosis involving small to medium size arteries of the dermis and subcutis. Although not yet clearly explained, the pathogenetic role of a predisposing hypercoagulability state is currently the most frequently considered hypothesis.