Fig. 1From: Hypercalcemia in metastatic GIST caused by systemic elevated calcitriol: a case report and review of the literatureChanges in plasma-ionized calcium and estimated glomerular filtration rate (eGFR) in response to treatment. Treatment administered: intravenous saline (day one), 600 IU of calcitonin (days one and four), 37.5 mg/day of prednisolone (day two and onwards), and 4 mg of intravenous zoledronic acid (day five)Back to article page