Aydin M, Emri S, Caner B
Department of Nuclear Medicine, Hacettepe University Medical Faculty, Ankara, Turkey.
Clin Nucl Med. 2000 Jun;25(6):467-8. doi: 10.1097/00003072-200006000-00015.
A 52-year-old woman was hospitalized because of dyspnea and dysphagia. Thoracic computed tomography revealed a retrotracheal mass. Tc-99m pertechnetate scintigraphy showed intense accumulation of radioactivity corresponding to the mediastinal mass detected by computed tomography. Repeated Tc-99m pertechnetate scintigraphy performed after oral administration of potassium perchlorate (KCLO4) revealed complete disappearance of the radioactive accumulation in the mediastinum, suggesting that the retrotracheal mass was a retrosternal goiter. Subsequent surgical removal and analysis of the mass showed it was indeed a retrosternal goiter. This case highlights the importance of Tc-99m pertechnetate thyroid scintigraphy with and without KCLO4 administration as a simple, accurate, and cost-effective imaging method to diagnose retrosternal goiter.
一名52岁女性因呼吸困难和吞咽困难入院。胸部计算机断层扫描显示气管后有一肿块。锝-99m高锝酸盐闪烁扫描显示放射性物质强烈聚集，与计算机断层扫描检测到的纵隔肿块相对应。口服高氯酸钾（KCLO4）后重复进行锝-99m高锝酸盐闪烁扫描，结果显示纵隔内放射性聚集完全消失，提示气管后肿块为胸骨后甲状腺肿。随后对该肿块进行手术切除及分析，结果表明其确实是胸骨后甲状腺肿。该病例凸显了在使用和不使用高氯酸钾的情况下进行锝-99m高锝酸盐甲状腺闪烁扫描，作为一种诊断胸骨后甲状腺肿的简单、准确且经济高效的成像方法的重要性。
