Child Kidney Dis.  2017 Apr;21(1):21-25. 10.3339/jkspn.2017.21.1.21.

A Case of Severe Hypercalcemia Causing Acute Kidney Injury: An Unusual Presentation of Acute Lymphoblastic Leukemia

Affiliations
  • 1Department of Pediatrics, Seoul National University Children's Hospital, Seoul, Korea. kanghg@snu.ac.kr
  • 2Department of Pediatrics, Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea.

Abstract

Severe hypercalcemia is rarely encountered in children, even though serum calcium concentrations above 15-16 mg/dL could be life-threatening. We present a patient having severe hypercalcemia and azotemia. A 14-year-old boy with no significant past medical history was referred to our hospital with hypercalcemia and azotemia. Laboratory and imaging studies excluded hyperparathyroidism and solid tumor. Other laboratory findings including a peripheral blood profile were unremarkable. His hypercalcemia was not improved with massive hydration, diuretics, or even hemodialysis, but noticeably reversed with administration of calcitonin. A bone marrow biopsy performed to rule out the possibility of hematological malignancy revealed acute lymphoblastic leukemia. His hypercalcemia and azotemia resolved shortly after initiation of induction chemotherapy. Results in this patient indicate that a hematological malignancy could present with severe hypercalcemia even though blast cells have not appeared in the peripheral blood. Therefore, extensive evaluation to determine the cause of hypercalcemia is necessary. Additionally, appropriate treatment, viz., hydration or administration of calcitonin is important to prevent complications of severe hypercalcemia, including renal failure and nephrocalcinosis.

Keyword

Hypercalcemia; Acute kidney injury; Azotemia; Leukemia

MeSH Terms

Acute Kidney Injury*
Adolescent
Azotemia
Biopsy
Bone Marrow
Calcitonin
Calcium
Child
Diuretics
Hematologic Neoplasms
Humans
Hypercalcemia*
Hyperparathyroidism
Induction Chemotherapy
Leukemia
Male
Nephrocalcinosis
Precursor Cell Lymphoblastic Leukemia-Lymphoma*
Renal Dialysis
Renal Insufficiency
Calcitonin
Calcium
Diuretics
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