Hypercalcemia Associated with Isolated Bone Marrow Sarcoidosis in a Patient with Underlying Monoclonal Gammopathy of Undetermined Significance: Case Report and Review of Literature

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Hypercalcemia Associated with Isolated Bone Marrow Sarcoidosis in a Patient with Underlying Monoclonal Gammopathy of Undetermined Significance: Case Report and Review of Literature

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Title: Hypercalcemia Associated with Isolated Bone Marrow Sarcoidosis in a Patient with Underlying Monoclonal Gammopathy of Undetermined Significance: Case Report and Review of Literature
Author: Gubatan, John Mark B; Louissaint, Abner; Vanderpool, E. John E.; Wang, Xiaohui; Mahindra, Anuj

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Citation: Gubatan, John, Xiaohui Wang, Abner Louissaint, Anuj Mahindra, and John Vanderpool. 2016. Hypercalcemia Associated with Isolated Bone Marrow Sarcoidosis in a Patient with Underlying Monoclonal Gammopathy of Undetermined Significance: Case Report and Review of Literature. Biomarker Research 4:18.
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Abstract: Bone marrow sarcoidosis is extremely rare. The association between sarcoidosis and lymphoproliferative disorders has been previously speculated, although the diagnosis of sarcoidosis often precedes any hematological derangements. Here, we report for the first time, a case of a 57 year old woman with a previous diagnosis of monoclonal gammopathy of undetermined significance (MGUS) developing hypercalcemia and renal failure with work notable for isolated bone marrow sarcoidosis and not multiple myeloma as expected. The patient was successfully managed with prednisone taper therapy with resolution of her hypercalcemia and repeat bone marrow biopsies demonstrating resolving granulomas. Our case illustrates the diagnostic challenges associated with bone marrow sarcoidosis and suggest that chronic immune stimulation in the bone marrow in the setting of MGUS may be a risk factor for the development of localized sarcoidosis. The long term consequences of steroid therapy targeting sarcoidosis in this patient with underlying MGUS remain unknown. Close followup is planned in light of the increased risk of malignant transformation of MGUS into multiple myeloma in the setting of
bone marrow sarcoidosis.
Published Version: 10.1186/s40364-016-0072-5
Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:27769561
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