Medicine · 2022
Hypercalcemia worsened after vitamin D supplementation in a sarcoidosis patient: A case report.
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Mio Kimito, Haruhara Kotaro, Shimizu Akihiro, Oshiro Kentaro, Kawai Rena, Ikeda Masato, Yokoo Takashi
Аннотация
RATIONALE: There are many causes of hypercalcemia, with hyperparathyroidism and malignancy accounting for 90% of cases. Sarcoidosis and the intake of vitamin D supplements may also cause hypercalcemia, although the occurrence rate is low if only one is involved. We herein report a sarcoidosis patient who developed hypercalcemia after taking cholecalciferol (vitamin D supplement) for a year.
PATIENT CONCERN: A 62-year-old Japanese man presented with hypercalcemia and acute kidney injury along with symptoms of fatigue and appetite loss while being followed up for sarcoidosis.
DIAGNOSES: We determined that a combination of cholecalciferol supplementation and sarcoidosis had led to hypercalcemia for several reasons. First, hypercalcemia had not been noted when this patient had first been admitted due to sarcoidosis-related respiratory failure several years earlier, which we presumed that was the highest sarcoidosis disease activity. Second, low serum 25-OH Vit.D3 and high 1,25-(OH)2 Vit.D3 levels were noted despite cholecalciferol supplementation for a year, suggesting that 1-α-hydroxylase overexpression caused by sarcoidosis accelerated the conversion from 25-OH Vit.D3 to 1,25-(OH)2 Vit.D3.
INTERVENTIONS: Although initially resistant to preservative management, the hypercalcemia promptly improved after starting corticosteroid treatment.
OUTCOMES: Hypercalcemia and acute kidney injury were normalized after corticosteroid treatment.
LESSONS: We should be aware of patients' medications, especially in patients with granulomatosis disease. The concomitant measurement of 25-OH Vit.D3 and 1,25-(OH)2 Vit.D3 levels is useful for determining the cause of hypercalcemia.
PATIENT CONCERN: A 62-year-old Japanese man presented with hypercalcemia and acute kidney injury along with symptoms of fatigue and appetite loss while being followed up for sarcoidosis.
DIAGNOSES: We determined that a combination of cholecalciferol supplementation and sarcoidosis had led to hypercalcemia for several reasons. First, hypercalcemia had not been noted when this patient had first been admitted due to sarcoidosis-related respiratory failure several years earlier, which we presumed that was the highest sarcoidosis disease activity. Second, low serum 25-OH Vit.D3 and high 1,25-(OH)2 Vit.D3 levels were noted despite cholecalciferol supplementation for a year, suggesting that 1-α-hydroxylase overexpression caused by sarcoidosis accelerated the conversion from 25-OH Vit.D3 to 1,25-(OH)2 Vit.D3.
INTERVENTIONS: Although initially resistant to preservative management, the hypercalcemia promptly improved after starting corticosteroid treatment.
OUTCOMES: Hypercalcemia and acute kidney injury were normalized after corticosteroid treatment.
LESSONS: We should be aware of patients' medications, especially in patients with granulomatosis disease. The concomitant measurement of 25-OH Vit.D3 and 1,25-(OH)2 Vit.D3 levels is useful for determining the cause of hypercalcemia.