甲状舌管嚢胞の1例

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The thyroglossal tract cyst is an uncommon developmental cyst which may form anywhere along the embryonic thyroglossal tract.<BR>This article presents a case of thyroglossal cyst. The 31-year-old male patient complained of a tumor in the midline of the anterior neck for about one month. Ultrasonography showed an echo-free cystic pattern with a comparatively defined and irregular border. Computed tomography also revealed a cystic lesion with inflammation. An exploratory puncture aspirated yellow-colored mucoid fluid. Microorganisms were not isolated from fluid, and the cytology revealed basal cells, foam cells, macrophages, lymphocytes, keratin, and numerous neutrophils with no evidence of malignancy.<BR>The cyst was excised under clinical diagnosis of thyroglossal cyst. A cord-like structure was seen to the level of the hyoid bone during the surgery, that followed Sistrunks principles.