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Recurrent hypercalcemia and elevated 1,25-dihydroxyvitamin D levels in Hodgkin's disease
R J Mercier1, J M Thompson, G S Harman
1Department of Medicine, Wilford Hall United States Air Force Medical Center, San Antonio, Texas 78236-5300.
Insights
Hypercalcemia, a rare complication of Hodgkin's disease, was linked to elevated 1,25-dihydroxyvitamin D levels in a patient. This suggests vitamin D production by the lymphoma itself, not bone disease, may cause high calcium.
Area of Science:
- Oncology
- Endocrinology
- Metabolic Diseases
Background:
- Hypercalcemia is rarely associated with Hodgkin's disease.
- When hypercalcemia occurs, it's typically due to bone invasion by the lymphoma.
- This case examines an unusual cause of hypercalcemia in a patient with a long history of Hodgkin's disease.
Observation:
- A 40-year-old male with a 15-year history of Hodgkin's disease experienced four recurrences.
- Each recurrence was preceded by hypercalcemia.
- Hypercalcemia occurred without evidence of bone disease or elevated parathyroid hormone levels.
Findings:
- Marked elevations in 1,25-dihydroxyvitamin D levels were observed.
- These vitamin D levels paralleled the patient's disease course and response to treatment.
- The findings suggest the lymphoma itself was producing 1,25-dihydroxyvitamin D.
Implications:
- This case provides evidence for lymphoma-associated production of 1,25-dihydroxyvitamin D.
- It highlights a potential mechanism for hypercalcemia in Hodgkin's disease independent of skeletal involvement.
- Further research may elucidate the role of vitamin D metabolism in lymphoma-related complications.
Abstract:
Hypercalcemia has been infrequently associated with Hodgkin's disease. When seen, most cases have been attributable to skeletal invasion by disease. Herein is described a 40-year-old man with a 15-year history of Hodgkin's disease. Each of four disease recurrences was heralded by hypercalcemia occurring in the absence of bone disease or elevation of parathyroid hormone levels. Marked elevations of 1,25-dihydroxyvitamin D levels were observed that paralleled his disease course and response to therapy. The repetitive association of hypercalcemia with an elevation of 1,25-dihydroxyvitamin D in this case provides further evidence of lymphoma-associated production of this vitamin.