Letrozole Induced Hypercalcemia in a Patient with Breast Cancer

Hypersecretion of PTHrP is a relatively common cause of malignancy-related hypercalcemia. However, there is only one case report of letrozole induced hypercalcemia. A 52-year-old female patient was referred to our clinic because of the recent discovery of hypercalcemia (11.0 mg/dL). The patient had...

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Main Authors: Suleyman Hilmi Ipekci, Suleyman Baldane, Ercument Ozturk, Murat Araz, Huseyin Korkmaz, Fatih Colkesen, Levent Kebapcilar
Format: Article
Language:English
Published: Wiley 2014-01-01
Series:Case Reports in Oncological Medicine
Online Access:http://dx.doi.org/10.1155/2014/608585
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author Suleyman Hilmi Ipekci
Suleyman Baldane
Ercument Ozturk
Murat Araz
Huseyin Korkmaz
Fatih Colkesen
Levent Kebapcilar
author_facet Suleyman Hilmi Ipekci
Suleyman Baldane
Ercument Ozturk
Murat Araz
Huseyin Korkmaz
Fatih Colkesen
Levent Kebapcilar
author_sort Suleyman Hilmi Ipekci
collection DOAJ
description Hypersecretion of PTHrP is a relatively common cause of malignancy-related hypercalcemia. However, there is only one case report of letrozole induced hypercalcemia. A 52-year-old female patient was referred to our clinic because of the recent discovery of hypercalcemia (11.0 mg/dL). The patient had a history of left breast carcinoma. She had started a course of letrozole (aromatase inhibitor; 2.5 mg dose/day) ten months earlier. Patient’s parathyroid hormone-related protein levels were normal and a bone scintigram revealed no evidence of skeletal metastasis. Other potential causes of high calcium levels were ruled out. We recognized that, when letrozole was taken at one dose daily (2.5 mg), she had recurrent hypercalcemia. Our experience suggests that letrozole may precipitate hypercalcemia in a patient with breast cancer.
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issn 2090-6706
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language English
publishDate 2014-01-01
publisher Wiley
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series Case Reports in Oncological Medicine
spelling doaj-art-0aafa6f2ead641a2b0cf2ca2cbb12e1a2025-08-20T02:03:08ZengWileyCase Reports in Oncological Medicine2090-67062090-67142014-01-01201410.1155/2014/608585608585Letrozole Induced Hypercalcemia in a Patient with Breast CancerSuleyman Hilmi Ipekci0Suleyman Baldane1Ercument Ozturk2Murat Araz3Huseyin Korkmaz4Fatih Colkesen5Levent Kebapcilar6Division of Endocrinology and Metabolism, Department of Internal Medicine, Faculty of Medicine, Selcuk University, 42131 Konya, TurkeyDivision of Endocrinology and Metabolism, Department of Internal Medicine, Faculty of Medicine, Selcuk University, 42131 Konya, TurkeyDepartment of Internal Medicine, Faculty of Medicine, Selcuk University, 42131 Konya, TurkeyDivision of Medical Oncology, Department of Internal Medicine, Faculty of Medicine, Selcuk University, 42131 Konya, TurkeyDepartment of Internal Medicine, Faculty of Medicine, Selcuk University, 42131 Konya, TurkeyDepartment of Internal Medicine, Faculty of Medicine, Selcuk University, 42131 Konya, TurkeyDivision of Endocrinology and Metabolism, Department of Internal Medicine, Faculty of Medicine, Selcuk University, 42131 Konya, TurkeyHypersecretion of PTHrP is a relatively common cause of malignancy-related hypercalcemia. However, there is only one case report of letrozole induced hypercalcemia. A 52-year-old female patient was referred to our clinic because of the recent discovery of hypercalcemia (11.0 mg/dL). The patient had a history of left breast carcinoma. She had started a course of letrozole (aromatase inhibitor; 2.5 mg dose/day) ten months earlier. Patient’s parathyroid hormone-related protein levels were normal and a bone scintigram revealed no evidence of skeletal metastasis. Other potential causes of high calcium levels were ruled out. We recognized that, when letrozole was taken at one dose daily (2.5 mg), she had recurrent hypercalcemia. Our experience suggests that letrozole may precipitate hypercalcemia in a patient with breast cancer.http://dx.doi.org/10.1155/2014/608585
spellingShingle Suleyman Hilmi Ipekci
Suleyman Baldane
Ercument Ozturk
Murat Araz
Huseyin Korkmaz
Fatih Colkesen
Levent Kebapcilar
Letrozole Induced Hypercalcemia in a Patient with Breast Cancer
Case Reports in Oncological Medicine
title Letrozole Induced Hypercalcemia in a Patient with Breast Cancer
title_full Letrozole Induced Hypercalcemia in a Patient with Breast Cancer
title_fullStr Letrozole Induced Hypercalcemia in a Patient with Breast Cancer
title_full_unstemmed Letrozole Induced Hypercalcemia in a Patient with Breast Cancer
title_short Letrozole Induced Hypercalcemia in a Patient with Breast Cancer
title_sort letrozole induced hypercalcemia in a patient with breast cancer
url http://dx.doi.org/10.1155/2014/608585
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AT huseyinkorkmaz letrozoleinducedhypercalcemiainapatientwithbreastcancer
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