[The attempt to standardize treatment protocols for cancer-related hypercalcemia: developing a data-based flowchart].

We developed a flowchart for the treatment of cancer-related hypercalcemia based on the review of previous reports. The treatment protocols were standardized in each group of four different ranges of serum calcium concentration (< 12, 12-14, 14-16, < 16 mg/dl). In each Ca range, specific treatment was adjusted according to the clinical evaluation of symptoms and progression of illness of the patients.