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Calciphylaxis, or calcific uremic arteriolopathy (CUA), is a syndrome of vascular calcification, thrombosis and skin necrosis. It is seen mostly in patients with Stage 5 chronic kidney disease, but can occur in the absence of renal failure. It results in chronic non-healing wounds and is usually fatal. Calciphylaxis is a rare but serious disease, believed to affect 1-4% of all dialysis patients. Calciphylaxis is one type of extraskeletal calcification. Similar extraskeletal calcifications are observed in some patients with hypercalcemic states, including patients with milk-alkali syndrome, sarcoidosis, primary hyperparathyroidism, and hypervitaminosis D. ==Signs and symptoms== The first skin change in calciphylaxis lesions are mottling of the skin and induration in a livedo reticularis pattern. As tissue thrombosis and infarction occurs, a black, leathery eschar in an ulcer with adherent black slough are found. Surrounding the ulcers is usually a plate-like area of indurated skin. These lesions are always extremely painful and most often occur on the lower extremities, abdomen, buttocks, and penis. Because the tissue has infarcted, wound healing seldom occurs, and ulcers are more likely to become secondarily infected. Many cases of calciphylaxis end with systemic bacterial infection and death.〔 Calciphylaxis is characterized by the following histologic findings: # systemic medial calcification of the arteries, i.e. calcification of tunica media. Unlike other forms of vascular calcifications (e.g., intimal, medial, valvular), calciphylaxis is characterised also by # small vessel mural calcification with or without endovascular fibrosis, extravascular calcification and vascular thrombosis, leading to tissue ischemia (including skin ischemia and, hence, skin necrosis). ===Heart of Stone=== Severe forms of calciphylaxis may cause diastolic heart failure from cardiac calcification, called ''heart of stone''.〔(Heart of Stone ) - CINDY W. T OM, MD,ANDDEEPAKR. TALREJA, MD. Division of Cardiovascular Diseases, Mayo Clinic College of Medicine, Rochester, Minn〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Calciphylaxis, or calcific uremic arteriolopathy (CUA), is a syndrome of vascular calcification, thrombosis and skin necrosis. It is seen mostly in patients with Stage 5 chronic kidney disease, but can occur in the absence of renal failure. It results in chronic non-healing wounds and is usually fatal. Calciphylaxis is a rare but serious disease, believed to affect 1-4% of all dialysis patients.Calciphylaxis is one type of extraskeletal calcification. Similar extraskeletal calcifications are observed in some patients with hypercalcemic states, including patients with milk-alkali syndrome, sarcoidosis, primary hyperparathyroidism, and hypervitaminosis D.==Signs and symptoms==The first skin change in calciphylaxis lesions are mottling of the skin and induration in a livedo reticularis pattern. As tissue thrombosis and infarction occurs, a black, leathery eschar in an ulcer with adherent black slough are found. Surrounding the ulcers is usually a plate-like area of indurated skin. These lesions are always extremely painful and most often occur on the lower extremities, abdomen, buttocks, and penis. Because the tissue has infarcted, wound healing seldom occurs, and ulcers are more likely to become secondarily infected. Many cases of calciphylaxis end with systemic bacterial infection and death.Calciphylaxis is characterized by the following histologic findings:」の詳細全文を読む スポンサード リンク
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