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胸骨后异位甲状腺,虽仅占所有纵膈肿物的10%,但诊断纵膈肿物时应给予注意。临床上呈现与可触及甲状腺有关的纵膈压迫症状及胸部X线显示的纵膈肿物,可诊断为非特异性的甲状腺肿物。但术前诊断需要各种显象检查,如核素闪烁显象,电子计算机断层扫描(TCT)及NMR等单独或联合应用。本文叙述~(123)Ⅰ闪烁照像及NMR显象在纵膈甲状腺术前诊断的应用。病例报告:一例60岁白人妇女,于1968年有咽下困难,经~(99m)Tc甲状腺闪烁照相显示为对称性弥漫性甲状腺肿,于1970年再次行~(99m)Tc检查呈现腺体轻度增大,双叶放射性活性均匀一致,胸骨后则无放射性
The poststernal ectopic thyroid, although accounting for only 10% of all mediastinal masses, should be noted when diagnosing a mediastinal mass. Clinically, mediastinal constriction associated with palpable thyroid glands and mediastinal x-rays show mediastinal masses that can be diagnosed as nonspecific thyroid masses. However, preoperative diagnosis requires various imaging examinations, such as radionuclide scintigraphy, computed tomography (TCT), and NMR alone or in combination. This article describes the application of ~(123)I scintigraphy and NMR imaging in the preoperative diagnosis of mediastinal thyroidectomy. Case report: A 60-year-old Caucasian woman who had dysphagia in 1968, showed symmetric diffuse goiter with ~(99m)Tc thyroid scintigraphy, and performed a ~(99m)Tc examination again in 1970 to show glandular lightness. Increased degree, uniform bifocal radioactivity, no radioactivity after sternum