secondary hyperparathyroidism…

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endocrine glands, parathyroids, four glands, in the neck that produce parathyroid hormone to help control calcium metabolism, excessive production of this hormone, increased activity of these glands is known, hyperparathyroidism, occurs in response to low blood calcium, secondary hyperparathyroidism, parathyroid hormone helps maintain blood calcium by regulating bone turnover, absorption of calcium, gut, excretion of calcium, in the urine, many disorders, lead to secondary hyperparathyroidism by causing hypocalcemia, low levels of calcium, in the blood, disordered phosphate balance, disorders of vitamin d, rickets, osteomalacia, vitamin d deficiency, vitamin d malabsorption, abnormal vitamin d metabolism induced by drugs, at-risk populations include children, malnutrition, elderly people, little sun exposure, disorders of phosphate metabolism, malnutrition, malabsorption, aluminum toxicity, kidney disease, types of cancer, phosphate depletion, cause osteomalacia, calcium deficiency, not enough calcium, in the diet, too much calcium loss, in the urine, chronic renal failure, chronic renal failure, important cause of secondary hyperparathyroidism, disorder is complex, phosphate clearance is impaired, phosphate is released from bone, vitamin d is not produced, intestinal calcium absorption is low, blood levels of calcium, lowered, a positive feedback loop leads to increased bone resorption, bone is broken down in an attempt to regulate abnormal levels of these chemicals, hyperphosphatemia, high levels of phosphates, in the blood, further secondary hyperparathyroidism, symptoms generally relate, underlying cause of secondary hyperparathyroidism, in children, rickets, weakness, poor growth, bowed limbs, swollen joints, bone pain, fractures, delayed tooth development, patients, kidney failure, have osteomalacia, osteoporosis, bone pain, fractures, symptoms of malabsorption, diarrhea, an underlying cancer, occur in patients, disorders, signs, bone deformities, swollen joints, fractures, elevated intact pth, low serum calcium, abnormal serum phosphorus levels, due to absorption problems, due to kidney failure, elevated serum alkaline phosphatase, variable vitamin d levels, x-rays, evidence of osteomalacia, fractures, bone resorption, low bone mineral density, abnormal urine calcium levels, problem, absortion, in the gut, problem, the kidneys, treatment involves correcting the underlying cause, the secondary hyperparathyroidism, patients, vitamin d deficiency, vitamin d, malabsorption, patients, cancer, treated surgically, patients, chronic kidney failure, calcium supplementation, phosphate restriction, vitamin d analogs, dialysis, kidney transplantation, parathyroid surgery needed, secondary hyperparathyroidism depends on the underlying cause, rickets, a good prognosis, secondary hyperparathyroidism have variable outcomes, tertiary hyperparathyroidism, patients, kidney failure, in these cases, hypercalcemia, elevated levels of calcium, calcium supplementation, surgery on the parathyroids, become necessary, renal osteodystrophy is another potential complication, variable syndrome comprised of osteomalacia, osteoporosis, secondary hyperparathyroidism, osteosclerosis, bone pain, weakness, fractures, the syndrome, have symptoms of this disorder, kidney disease, early detection of rickets, vitamin d deficiency, prevent secondary hyperparathyroidism, treatment of patients, kidney failure helps minimize secondary hyperparathyroidism.