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Clin Oral Investig ; 5(3): 194-8, 2001 Sep.
Article in English | MEDLINE | ID: mdl-11642565

ABSTRACT

Humoral hypercalcemia of malignancy (HHM) is one of the most common metabolic complications associated with cancer. A retrospective study of hypercalcemia in patients with squamous cell carcinoma of the oral cavity was undertaken. All patients were periodically monitored for their serum level of calcium (Ca). Hypercalcemia was defined as a serum Ca concentration higher than 11 mg/dl of the correction for serum albumin concentration. The serum levels of parathyroid hormone related protein (PTH-rP) were also measured by radioimmunoassay. Hypercalcemia was detected in ten of 246 patients (4.1%). All ten patients were at an advanced stage of oral squamous cell carcinoma (SCC, Stage IVA, IVB or IVC). In these ten patients, the serum level of PTH-rP was significantly elevated, 238 +/- 91 pmol/l (range, 108-380 pmol/L). The patients with HHM who underwent antihypercalcemic therapy showed reduced Ca levels relating to PTH-rP levels; however, the Ca concentration was temporarily improved after anti-hypercalcemic treatment. The median survival time after diagnosis of HHM was only 55.8 +/- 19.9 days (range, 27-86 days). HHM in oral cancer is likely attributable to PTH-rP, and its occurrence appears to be an ominous prognostic sign.


Subject(s)
Carcinoma, Squamous Cell/complications , Hypercalcemia/etiology , Mouth Neoplasms/complications , Adult , Aged , Aged, 80 and over , Biomarkers, Tumor/blood , Calcitonin/therapeutic use , Carcinoma, Squamous Cell/blood , Carcinoma, Squamous Cell/pathology , Diphosphonates/therapeutic use , Female , Humans , Hypercalcemia/drug therapy , Male , Middle Aged , Mouth Neoplasms/blood , Mouth Neoplasms/pathology , Neoplasm Proteins/blood , Neoplasm Staging , Pamidronate , Parathyroid Hormone-Related Protein , Prognosis , Proteins/analysis
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