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KMID : 1148020140390010039
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2014 Volume.39 No. 1 p.39 ~ p.42
Paraneoplastic Neutrophilia Originating from an Anaplastic Transformation of Papillary Thyroid Carcinoma in a Metastatic Pleural Lesion
Baek Jeong-Su

Lee Sung-Hyun
Cho Ae-Ri
Lee Joo-Young
Jang Jeong-Mi
Lee Seung-Suk
Lee Hyo-Rak
Abstract
Marked neutrophilia associated with neoplasia is a relatively rare finding and has been considered as a paraneoplastic manifestation.Thyroid cancer seldom presents with paraneoplastic leukocytosis. We report on a case of a 69-year-old man whopresented with paraneoplastic leukocytosis seven months after undergoing total thyroidectomy and I-131 therapy for treatmentof papillary thyroidcarcinoma. We found neither bone marrow involvement of malignant cells nor hematologic malignancy.Based on elevated levels of serum granulocyte colony-stimulating factor, we concluded that the cause was paraneoplasticleukocytosis. Another interesting point was the anaplastic transformation in the pleural metastatic site. It usuallyoccurs in the intrathyroid or regional lymph node.
KEYWORD
Paraneoplastic leukocytosis, Anaplastic carcinoma, Papillary thyroid carcinoma, Anaplastic transformation, Granulocyte colony-stimulating factor
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