My Husband Has Hypercalcemia (recurrent) But Has No Malignancy. All

My husband has hypercalcemia (recurrent) but has no malignancy. All testing has been negative for multiple myeloma, and all other cancers. He received a single infusion of Zometa last September and his Ca++ level returned to normal. On April 25, 2016 he received another infusion (4 mg over 15 min) and his Ca++ is still high. Can he receive another infusion at the two week mark? He sees hematologist/oncologist May 9.

Thank you.
Barbara