Abstract
The etiology of hypercalcemia was investigated in a patient with primary isolated non-Hodgkin's lymphoma of the heart. There was no evidence of bone involvement, and parathyroid hormone and calciterol levels were suppressed. Plasma parathyroid-hormone-related protein (PTHrP 1-86) detected by immunoradiometric assay was increased (15 pmol/l compared with < 0.3 pmol/l in a control). We demonstrated that PTHrP was the humoral mediator of severe hypercalcemia in our patient.
MeSH terms
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Heart Neoplasms / complications*
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Heart Neoplasms / diagnosis
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Humans
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Hypercalcemia / blood
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Hypercalcemia / etiology*
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Immunoradiometric Assay
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Lymphoma, Non-Hodgkin / complications*
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Lymphoma, Non-Hodgkin / diagnosis
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Male
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Middle Aged
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Parathyroid Hormone / blood
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Parathyroid Hormone-Related Protein*
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Peptide Fragments / blood
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Peptides / blood
Substances
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Parathyroid Hormone
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Parathyroid Hormone-Related Protein
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Peptide Fragments
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Peptides
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parathyroid hormone-related protein (1-86)