Zamora E, Ghandili S, Zamora M A, Chun K J
Department of Radiology, Division of Nuclear Medicine, Montefiore Medical Center and the Albert Einstein College of Medicine, Bronx, New York, United States.
Sonoscan, Centro de Diagnóstico Biomédico, Guatemala City, Guatemala.
World J Nucl Med. 2022 Jul 19;21(2):148-151. doi: 10.1055/s-0042-1750337. eCollection 2022 Jun.
Primary intrathoracic goiter is an uncommon congenital entity resulting from over decent ectopic thyroid tissue. As compared with secondary intrathoracic goiter, primary entities are discrete from orthotopic thyroid tissue and may lead to potentially serious complications such as malignancy and shortness of breath. Intrathoracic goiters have been described as showing mild or absent uptake of Tc-pertechnetate on planar scintigraphy. We present an incidental primary intrathoracic goiter found in a patient undergoing evaluation with multimodal scintigraphy and early Tc-sestamibi single-photon emission computed tomography/computed tomography (SPECT/CT) for localization of parathyroid adenomas. The mass was inconspicuous on TcO scintigraphy but methoxyisobutylisonitrile-avid on early planar and SPECT/CT.
原发性胸内甲状腺肿是一种罕见的先天性疾病，由异位甲状腺组织过度下移所致。与继发性胸内甲状腺肿相比，原发性胸内甲状腺肿与正常位置的甲状腺组织不相连，可能导致诸如恶变和呼吸急促等潜在严重并发症。胸内甲状腺肿在平面闪烁扫描中表现为对锝-高锝酸盐摄取轻度或无摄取。我们报告了1例在接受多模态闪烁扫描及早期锝-甲氧基异丁基异腈单光子发射计算机断层扫描/计算机断层扫描（SPECT/CT）以定位甲状旁腺腺瘤的患者中偶然发现的原发性胸内甲状腺肿。该肿物在锝酸盐闪烁扫描中不明显，但在早期平面及SPECT/CT上对甲氧基异丁基异腈摄取。
