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This patient summary on hypercalcemia is adapted from the PDQ summary written for health professionals by cancer experts. This and other credible information about cancer treatment, screening, prevention, supportive care, and ongoing clinical trials is available from the National Cancer Institute. Hypercalcemia is a disorder in which the level of calcium in the blood is too high. Hypercalcemia is the most common life-threatening disorder associated with cancer. This brief summary describes hypercalcemia, its causes and treatment.

This summary is about hypercalcemia in adults with cancer.