Journal
CLINICAL MEDICINE INSIGHTS-CASE REPORTS
Volume 15, Issue -, Pages -Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/11795476221125136
Keywords
Diagnosis; differential; bone diseases; endocrine; bone demineralization; pathologic; carcinoma; ductal; breast; hyperparathyroidism; primary
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This article presents a case of breast cancer with hypercalcemia initially diagnosed as bone metastases, but later found to have hyperparathyroidism. Postoperative treatment successfully normalized the patient's PTH and Ca2+ levels. The study highlights the importance of considering hyperparathyroidism in breast cancer patients with bone lesions.
Breast cancer might be complicated by distant metastases accompanied by hypercalcemia. but hyperparathyroidism is not commonly considered in the differential diagnosis. We present a case of 38 years old female patient who was diagnosed with ductal breast carcinoma. Eight months after the initial diagnosis the patient was diagnosed with distant bone metastases. However, this diagnosis was reconsidered at follow up. because we identified elevation of PTH 137.2 pg/ml, Ca2+ 1.19mmol/l, albumin corrected calcium 2.42mmol/l. 25(OH)D 39.4 nmol/l, indicating hyperparathyroidism. Scintigraphy with 99mTC-sestamibi confirmed parathyroid adenoma. Postoperative histopathology confirmed 1.2 g chief-cell PTA. Two months after the operation both PTH and Ca2+ levels were within the normal ranges. This study emphasizes the importance of considering possible hyperparathyroidism in patients with breast cancer and hypercalcemia. Routine evaluation of PTH is considered as a reasonable test in patients with breast cancer accompanied by bone lesions.
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