What causes high calcium and high pth other than parathyroidism?

High calcium levels combined with elevated parathyroid hormone (PTH) can occur due to conditions such as vitamin D toxicity, certain malignancies (like breast or lung cancer), or granulomatous diseases (like sarcoidosis) that lead to increased calcium absorption and mobilization. Additionally, chronic kidney disease can cause alterations in calcium metabolism and PTH levels. Medications, such as thiazide diuretics, may also contribute to hypercalcemia while elevating PTH.