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KMID : 0191120070220030568
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Journal of Korean Medical Science
2007 Volume.22 No. 3 p.568 ~ p.571
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Primary Malignant Teratoma with a Primitive Neuroectodermal Tumor Component in Thyroid Gland: A Case Report
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Kim Eun-Young
Bae Tae-Seok
Kwon Young-Mee
Kim Tae-Hyun
Chung Ki-Wook
Kim Sun-Wook
Ro Jung-Sil
Lee Eun-Sook
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Abstract
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Teratomas comprise the most common extragonadal germ cell tumors in childhood. Most teratomas involving the thyroid are benign and occur in children. However, the adult cases reported are mostly malignant and commonly arise in the thyroid. We report a case of a 31-yr-old female with a huge neck mass. Pathologic examination revealed it to be malignant teratoma composed of primitive neuroepithelial tissue with primitive neural tubes and loose myxoid to fibrous immature mesenchymal stroma. The patient underwent extensive evaluation of the thyroid gland with computed tomography (CT) scan and positron emission tomography (PET) scan, which revealed no evidence of metastatic disease. She underwent total thyroidectomy with bilateral modified radical neck dissection, intensive chemotherapy and radiotherapy. At 22-months of follow-up, the patient has remained euthyroid and showed no evidence of recurrence. This is the first case, to our knowledge, of malignant thyroid teratoma with a exuberant primitive neuroectodermal tumor component in Korea.
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KEYWORD
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Malignant Teratoma, Thyroid Neoplasm, Thyroid Disease
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