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  • Title: An unusual case of calciphylaxis.
    Author: Kouba DJ, Owens NM, Barrett TL, Laman SD.
    Journal: J Cutan Med Surg; 2004; 8(1):19-22. PubMed ID: 14735394.
    Abstract:
    BACKGROUND: Cutaneous calciphylaxis is a rare disorder that occurs most frequently in patients with end-stage renal disease (ESRD), those on hemodialysis, and renal transplant recipients. It is frequently associated with hyperparathyroidism and a markedly elevated calcium-phosphate product, and it carries a high mortality rate. The usual clinical presentation is of painful, stellate necrosis of the thighs or buttocks, often in the setting of livedo reticularis. Death usually results from septicemia. OBJECTIVE: This report documents an unusual case of recurrent, self-limiting calciphylaxis in the setting of a patient with ESRD and discusses the clinical and pathologic features of this potentially very fatal disorder. METHODS AND RESULTS: A 52-year-old woman presented with a greater than one-year history of relapsing and remitting, exquisitely painful, necrotic, numular plaques on the abdomen, breast, and arm. This patient had a markedly elevated calcium-phosphate product and parathyroid hormone level. The diagnosis of calciphylaxis was made by wedge biopsy of the most recent plaque, revealing calcification of medium-sized subcutaneous vessels and lobular capillaries with associated epidermal necrosis. CONCLUSIONS: This case demonstrates an unusual clinical variant of calciphylaxis that presented without the characteristic stellate necrosis or livedo reticularis that normally marks this condition and spontaneous resolution without incurring septicemia. Regardless of morphology, calciphylaxis should be considered in the differential diagnosis of painful, necrotic lesions occurring in the setting of ESRD.
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