Hypercalcemia in a Seminoma

Background: The association of seminoma with malignant hypercalcemia is extremely rare.Case findings: We present a 32-year-old male with hypercalcemia.Subsequently, a metastatic seminoma was discovered according to computed tomography and biopsy testing.Elevated 1,25-dihydroxyvitamin D levels were identified as the cause of hypercalcemia.Conclusion: Hypercalcemia is a rare but possible scenario in seminoma and therefore it is important to consider this uncommon cause in the differential diagnosis.