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Medicina (Buenos Aires)

versión impresa ISSN 0025-7680


SABAN, Melina; FIDALGO, Silvina; DIAZ, Carlos A.  y  LUTFI, Rubén J.. Effect of a single dose of zoledronic acid in a case of Paget bone disease. Medicina (B. Aires) [online]. 2010, vol.70, n.5, pp. 445-448. ISSN 0025-7680.

Paget's disease is a chronic disorder of bone remodeling characterized by increase of bone resorption by atypical osteoclasts, followed by rapid increase in bone formation resulting in a disorganized mosaic bone. The biochemical marker for early diagnosis and monitoring is serum alkaline phosphatase (ALP). We report the case of a 90 year old male, with diagnose of Paget's disease. Pamidronate treatment was started orally with partial response, so it was switched to intravenous pamidronate. Pain intensity and FAL levels diminished. The scyntigraphic scan, however, though improved, persisted abnormal. After several years of treatment, with adequate calcium and vitamin D support, the patient presents pain and increase of FAL. We administered intravenous zoledronic acid (4 mg) in a single dose. After this treatment we observed clinical and biochemical remission during four years and a significantly improvement in the scintigraphy. We report a case of Paget´s disease, resistant to pamidronate treatment in whom a single dose of zoledronic acid produced clinical and biochemical remission during 4 years and a significant improvement in the scintigraphic scan.

Palabras clave : Paget's bone strength; Zoledronic acid.

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