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Nefrología (Madrid)

versión On-line ISSN 1989-2284versión impresa ISSN 0211-6995


TORREGROSA, José V. et al. Successful treatment of calcific uraemic arteriolopathy with bisphosphonates. Nefrología (Madr.) [online]. 2012, vol.32, n.3, pp.329-334. ISSN 1989-2284.

Background and objectives: Calcific uraemic arteriolopathy (CUA), also known as calciphylaxis, is a rare but life-threatening condition that almost exclusively affects patients with chronic kidney disease. Several therapies have been employed to treat this disease but with irregular results. We report a prospective case series of eight patients diagnosed with CUA in our unit between 2002 and 2010. Material and method: The series consisted of eight patients with CUA (including 4 men, 5 dialysis patients and 3 with functioning allografts) who were treated with bisphosphonates. The diagnosis was by clinical suspicion and a confirmatory biopsy. Five patients had a previous history of high calcium-phosphorus product, 6 had a history of high parathyroid hormone levels (>800pg/ml), 4 had undergone parathyroidectomy, 5 had a history of high cumulative doses of steroids, and 6 patients were under dicoumarin treatment. None of the patients were obese or had diabetes mellitus. Results: In all patients, progression of skin lesions stopped between 2 to 4 weeks after starting bisphosphonate therapy, with no changes in blood levels of calcium and phosphate. Improvement in pain and lesions was faster in patients receiving intravenous ibandronate. All of these patients remained on bisphosphonate treatment for at least 6 months until the wounds healed completely. No recurrences have been observed after follow-up periods between 1 and 9 years. Renal function remained stable in transplant recipients. The treatment was well tolerated and no adverse effects were observed. Conclusions: Bisphosphonates could be a new and attractive alternative to treat CUA.

Palabras clave : Calcific uraemic arteriolopathy; Calciphylaxis; Bisphosphonates; Secondary hyperparathyroidism; End-stage renal disease; Kidney transplantation.

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