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    Mediastinal neoplasms in patients with Graves disease: a possible link between sustained hyperthyroidism and thymic neoplasia?

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    Author
    Boyd, Jonathan D; Juskevicius, Ridas
    Abstract
    Background Anterior mediastinal masses are a rare but well documented finding in Graves disease. The vast majority of these lesions represents benign thymic hypertrophy and regress after treatment of the hyperthyroidism. A small percentage of these cases however represent neoplastic/malignant diseases which require further treatment. Cases 12 year old boy with one year history of refractory Graves disease was found to have an anterior mediastinal mass and underwent curative thyroidectomy for sustained hyperthyroidism. Cervical lymphadenopathy was detected during the procedure and biopsy was obtained. A 23 year old woman who presented with a one month history of hyperthyroid symptoms, was diagnosed with Graves disease and also was found to have an anterior mediastinal mass on imaging. Biopsy of the anterior mediastinal mass was obtained and subsequently the patient underwent robotic thymectomy. Histologic examination and immunophenotyping of the cervical lymph node in a 12 year old boy revealed neoplastic proliferation of T lymphoblasts diagnostic of T lymphoblastic leukemia/lymphoma. Examination of the anterior mediastinal mass biopsy in the 23 year old woman revealed type B1 thymoma which was confirmed after examination of the subsequent robotic thymectomy specimen. Conclusion This is the first reported case of T cell lymphoblastic lymphoma and the third reported case of thymoma associated with sustained hyperthyroidism due to Graves disease. These cases indicate that an anterior mediastinal mass in a patient with active Graves disease may be due to a neoplastic cause, which may require definitive treatment. Caution should be exercised when dismissing a mediastinal mass as benign thymic hyperplasia in patients with active Graves disease.
    URI
    http://hdl.handle.net/10342/5742
    Subject
     Graves disease; Hyperthyroidism; Thymoma; T Lymphoblastic leukemia/lymphoma; Thymic hyperplasia 
    Date
    2012
    Citation:
    APA:
    Boyd, Jonathan D, & Juskevicius, Ridas. (January 2012). Mediastinal neoplasms in patients with Graves disease: a possible link between sustained hyperthyroidism and thymic neoplasia?. Thyroid Research, (5-5. Retrieved from http://hdl.handle.net/10342/5742

    Display/Hide MLA, Chicago and APA citation formats.

    MLA:
    Boyd, Jonathan D, and Juskevicius, Ridas. "Mediastinal neoplasms in patients with Graves disease: a possible link between sustained hyperthyroidism and thymic neoplasia?". Thyroid Research. . (5-5.), January 2012. February 27, 2021. http://hdl.handle.net/10342/5742.
    Chicago:
    Boyd, Jonathan D and Juskevicius, Ridas, "Mediastinal neoplasms in patients with Graves disease: a possible link between sustained hyperthyroidism and thymic neoplasia?," Thyroid Research 5, no. (January 2012), http://hdl.handle.net/10342/5742 (accessed February 27, 2021).
    AMA:
    Boyd, Jonathan D, Juskevicius, Ridas. Mediastinal neoplasms in patients with Graves disease: a possible link between sustained hyperthyroidism and thymic neoplasia?. Thyroid Research. January 2012; 5() 5-5. http://hdl.handle.net/10342/5742. Accessed February 27, 2021.
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