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KMID : 1202020130060020135
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Journal of Korean Thyroid Association
2013 Volume.6 No. 2 p.135 ~ p.139
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Metastatic Hemangiopericytoma of the Thyroid Gland
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Na Ahn-Soo
Kim Seon-Kwang
Youn Hyun-Jo
Park Ho-Sung
Jung Sung-Hoo
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Abstract
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Hemangiopericytoma (HPC) is a mesenchymal neoplasm constituting a minor portion of vascular tumors. Although HPCs are generally benign, some progress in a malignant course, leading to recurrence and metastasis even after radical surgery. We present a case of metastatic HPC of the thyroid gland, a very rare site of occurrence. Histological findings revealed a single, well-margined mass with high cellularity. Tumor cells were tightly packed spindle-shaped to round cells arranged around numerous thin-walled vessels. Tumor cells showed cytoplasmic immunoreactivity for CD34 and CD99. To our knowledge, this is the eleventh case reported worldwide and the first case in South Korea.
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KEYWORD
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Hemangiopericytoma, Thyroid, Metastasis, Solitary fibrous tumor
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