Tamoxifen flare hypercalcemia: an additional support for gallium nitrate usage.

Journal of Bone and Mineral Metabolism
Govinda Pillai ArumugamPanchanadham Sachdanandam

Abstract

In 12 of 93 hypercalcemic patients with metastatic advanced breast cancer treated with tamoxifen the most common life-threatening metabolic complication of flare hypercalcemia developed. All the hypercalcemic patients had osteolytic or mixed lytic and blastic bone metastases. In patients with advanced breast cancer, hypercalcemia develops within the first few weeks of initiation of tamoxifen therapy. In our study group, calcium levels were measured frequently in both serum and urine samples by a semi-autoanalyzer and an autoanalyzer, using standard methods. Elevation of calcium levels was noticed in the tamoxifen-receiving hypercalcemic breast cancer patients, and levels returned to normal when tamoxifen was withdrawn. The median duration of flare hypercalcemia was 9 days (range, 4-16 days). The median calcium value was 13.6 mg/dl (range, 11.7-15.8). The diagnosis of tamoxifen flare hypercalcemia was based on the normal pretreatment serum or urine calcium values and the occurrence of hypercalcemia within the first few weeks of tamoxifen initiation. There are no specific treatment recommendations for hormone flare hypercalcemia, except for tamoxifen withdrawal, which is usually temporary, and the introduction of a low dose of an...Continue Reading

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Citations

Apr 6, 2012·Southern Medical Journal·Sarah FrenchStephen Geraci
Oct 6, 2011·Journal of Medical Case Reports·Katsumasa KuroiYuka Hirashima
Jun 25, 2014·Case Reports in Oncological Medicine·Suleyman Hilmi IpekciLevent Kebapcilar
Oct 17, 2013·Journal of Intensive Care Medicine·Joshua D Maier, Steven N Levine

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