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Abstract

Hypercalcemia of Malignancy is a complicated condition often linked to parathyroid hormone, parathyroid hormone-related peptide, or bone metastasis. This report presents a unique case of calcitriol-mediated hypercalcemia in an 89-year-old female with primary pancreatic lymphoma, highlighting the rarity and complexity of this presentation. Initially, the patient's condition was thought to be related to sarcoidosis, but the recurrence of hypercalcemia led to the discovery of pancreatic B-cell lymphoma as the underlying cause. It also emphasizes the need to explore new treatment options. Interestingly, it demonstrates the successful use of cinacalcet in treating calcitriol-induced hypercalcemia in malignancies, which could be a potential therapeutic option for such cases. It also serves as a reminder of the critical need for ongoing research and innovative therapeutic strategies to improve outcomes in managing hypercalcemia caused by malignancies. The case underscores the potential complexities of calcitriol-mediated hypercalcemia, especially in uncommon presentations like primary pancreatic lymphoma.

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