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首页> 外文期刊>Journal of computer assisted tomography >Radiologic assessment of metastases to the thyroid gland.
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Radiologic assessment of metastases to the thyroid gland.

机译:甲状腺转移的放射学评估。

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摘要

PURPOSE: We reviewed the radiologic and clinical data in patients with metastatic disease to the thyroid gland and assessed the role of radiologic techniques in this disorder. METHOD: The findings on US (n = 11), CT (n = 7), MRI (n = 6), palpation or US-guided fine needle aspiration (FNA) biopsy, and clinical records were reviewed in 11 cases of pathologically verified metastatic tumors of the thyroid gland. RESULTS: Five patients had palpable thyroid nodules and six had nonpalpable nodules discovered incidentally with imaging procedures. Three patients had no known malignancies at the time of diagnosis of thyroid tumors. Correct diagnosis was obtained in 10 of the 11 cases with FNA biopsy. Thyroid metastases were detected in all of the cases with US and MRI and six of the seven cases with CT. Thyroid metastases were solitary (n = 5) or multiple (n = 6), and about half of them measured <2 cm in diameter. These tumors typically had well defined margins and no calcification and sometimes had cystic portions. Multiple nodules within the same patient were radiologically quite similar to each other. On US, metastases appeared as hypoechoic or markedly hypoechoic areas without halo, on CT as low density areas, and on MRI as areas of varying signal intensities. Half of the metastases showed hypointensity on either T2-weighted images or gadolinium-enhanced T1-weighted images. The tumors involved lymph nodes in 10 cases and other remote organs in 5. Level I or II or parotid nodes were involved in six cases. CONCLUSION: These radiologic features may alert clinicians to a possibility of metastatic thyroid cancer. US combined with US-guided FNA biopsy is suitable for early diagnosis of metastases to the thyroid gland.
机译:目的:我们回顾了转移性甲状腺疾病患者的放射学和临床资料,并评估了放射技术在该疾病中的作用。方法:对11例经病理证实的病例进行的超声检查(n = 11),CT检查(n = 7),MRI检查(n = 6),触诊或超声引导下细针穿刺活检(FNA)的检查结果和临床记录进行了回顾甲状腺转移性肿瘤。结果:5例患者的甲状腺结节可触及,而6例影像学检查偶然发现的不可触及结节。三名患者在诊断甲状腺肿瘤时未发现恶性肿瘤。在11例FNA活检中,有10例获得了正确的诊断。在所有US和MRI病例以及7例CT病例中,有6例检出甲状腺转移。甲状腺转移是单发的(n = 5)或多发的(n = 6),其中约一半的直径小于2 cm。这些肿瘤通常边缘清晰,无钙化,有时有囊性部分。同一患者内的多个结节在放射学上彼此非常相似。在US上,转移表现为低回声或明显无回声的低回声区域,在CT上显示为低密度区域,在MRI上显示为信号强度不同的区域。在T2加权图像或g增强的T1加权图像上,一半的转移灶显示低血压。肿瘤累及淋巴结10例,其他远端器官累及5例。I或II级或腮腺淋巴结肿大6例。结论:这些放射学特征可能会提醒临床医生转移甲状腺癌的可能性。 US结合美国指导的FNA活检适合于早期诊断甲状腺转移。

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