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Am J Clin Pathol. 1981 Feb;75(2):149-55.

Hypercalcemia associated with T-cell lymphoma-leukemia.

Abstract

Two adults who had T-cell lymphoma-leukemia and recurrent hypercalcemia in the absence of radiographic evidence of bone disease are described. Bone histopathology showed marked osteoclastic activation. Bone resorbing factors, including both prostaglandin E and a material produced in the presence of a prostaglandin synthetase inhibitor, were detected in the in-vitro culture fluids of malignant cells of one of the patients. Serum levels of parathyroid hormone were not elevated. These findings suggest that hypercalcemia resulted from in-vitro osteoclast activation by tumor cell product(s), one of which may be similar, if not identical, to the lymphocyte product osteoclast-activating factor. Two other patients having T-cell lymphoma-leukemia and hypercalcemia have been identified in the literature: the malignant cells of one of these patients also released a calcium-mobilizing factor in vitro.

PMID:
6970519
[Indexed for MEDLINE]
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