Herta Spencer, M.D.; Isaac Lewin, M.D.; Joseph Samachson, Ph.D.
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The diagnosis of hypercalcemia due to hyperparathyroidism is often difficult to differentiate from the diagnosis of hypercalcemia due to neoplasia, particularly when the latter diagnosis is not proved. Since the hyperparathyroid state may affect the intestinal absorption of calcium, calcium absorption studies using tracer doses of 47Ca and calcium balances were performed under constant dietary conditions in patients with hyperparathyroidism and in patients with hypercalcemia of suspected or proved neoplastic origin. In patients with hyperparathyroidism the intestial absorption of 47Ca was high, ranging from 72% to 99% of the administered dose and also remained very high in some patients on
Herta Spencer, Isaac Lewin, Joseph Samachson. Differentiation of Hypercalcemic States.. Ann Intern Med. 1969;70:1104. doi: 10.7326/0003-4819-70-5-1104_1
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Published: Ann Intern Med. 1969;70(5):1104.
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Print ISSN: 0003-4819 | Online ISSN: 1539-3704
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