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Hypercalcemia occurs most commonly in breast cancer, lymphoma, prostate cancer, thyroid cancer, lung cancer, myeloma, and colon cancer. [2] It may be caused by secretion of parathyroid hormone-related peptide by the tumor (which has the same action as parathyroid hormone), or may be a result of direct invasion of the bone, causing calcium ...
Hypercalcemia of malignancy may also occur due to tumor production of vitamin D or parathyroid hormone. These causes are rare and constitute about 1% of all causes of hypercalcemia of malignancy. [22] Hypercalcemia of malignancy usually portends a poor prognosis, and the medial survival is 25–52 days of its development. [22]
Idiopathic hypercalcinuria (IH) is a condition including an excessive urinary calcium level with a normal blood calcium level resulting from no underlying cause. [1] IH has become the most common cause of hypercalciuria and is the most serious metabolic risk factor for developing nephrolithiasis. [1]
Familial hypocalciuric hypercalcemia (FHH) is an inherited condition that can cause hypercalcemia, a serum calcium level typically above 10.2 mg/dL; although uncommon. [1] It is also known as familial benign hypocalciuric hypercalcemia (FBHH) where there is usually a family history of hypercalcemia which is mild, a urine calcium to creatinine ratio <0.01, and urine calcium <200 mg/day ...
Hypercalcemia, elevated blood calcium, has numerous causes, including [5] Elevated levels of parathyroid hormone due to hyperparathyroidism, leading to bone resorption and subsequent hypercalcemia by reducing phosphate concentration. Secretion of parathyroid hormone-related protein by certain tumors. Resorption of bone due to
Hyperparathyroidism is present in ≥ 90% of patients. Asymptomatic hypercalcemia is the most common manifestation: about 25% of patients have evidence of nephrolithiasis or nephrocalcinosis. In contrast to sporadic cases of hyperparathyroidism, diffuse hyperplasia or multiple adenomas are more common than solitary adenomas.
Milk-alkali syndrome (MAS), also referred to as calcium-alkali syndrome, is the third most common cause of elevated blood calcium levels (hypercalcemia). [2] [3] Milk-alkali syndrome is characterized by hypercalcemia, metabolic alkalosis, and acute kidney injury.
There are a number of causes of hypercalciuria including genetic (idiopathic), primary hyperparathyroidism, immobilization, pagets disease, Multiple Myeloma, Calcium excess, Vitamin D excess/increased sensitivity, drug-induced hypercalciuria, sarcoidosis, hyperthyroidism, Cushing's disease, and renal tubular acidosis.