Incidental Detection of Thyroid Nodules at Magnetic Resonance Imaging of the Cervical Spine
Incidental Detection of Thyroid Nodules at Magnetic Resonance Imaging of the Cervical Spine
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DOI：
10.2176/nmc.53.77
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发表时间：
2013-02-01
影响因子：
1.9
通讯作者：
Teramoto, Akira
中科院分区：
文献类型：
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作者：
Kim, Kyongsong;Emoto, Naoya;Teramoto, Akira
通过 389 幅 MR 图像对接受颈椎磁共振 (MR) 成像的患者偶然发现的甲状腺病变进行了前瞻性评估。矢状位图像从颅颈交界处延伸至上胸椎水平，轴向图像从C3-4至C7-T1椎间水平。 20 名患者（5.1%）共有 26 个甲状腺结节。 18 名患者表现为单个显性结节，其中 2 例患有多结节性腺体并具有单个显性结节（一名患者有 3 个，另一名患者有 5 个结节）。两名患者的腺体弥漫性增大，但无显性结节。结节的平均尺寸为11.6毫米。在 C5-6 椎间水平检测到 1 个甲状腺结节，在 C6-7 椎间水平检测到 14 个甲状腺结节，在 C7-T1 检测到 11 个甲状腺结节。对于甲状腺结节的检测，T-2 加权成像比 T-1 加权成像更有用，因为病变的高信号与等信号外观不同。一名患者在手术中被确诊为甲状腺癌。与造影剂计算机断层扫描和超声检查相比，检出率较低。我们的结果表明，MR 成像对于检测甲状腺病变的价值有限，仅根据颈椎 MR 成像不能否认此类病变的存在。然而，无症状的甲状腺病变，包括甲状腺癌，可以通过颈椎 MR 图像识别出来，因此我们建议在评估这些图像时应考虑此类病变。
The incidental detection of thyroid lesions in patients undergoing magnetic resonance (MR) imaging of the cervical spine was prospectively evaluated on 389 MR images. Sagittal images extended from the cranio-cervical junction to the upper thoracic level, and axial images from C3-4 to C7-T1 intervertebral levels. Twenty patients (5.1%) had a total of 26 thyroid nodules. Eighteen patients presented with a single dominant nodule, of whom 2 had a multinodular gland with a single dominant nodule (one had 3 and the other had 5 nodules). Two patients had diffusely enlarged gland without a dominant nodule. The mean size of the nodules was 11.6 mm. One thyroid nodule was detected at the C5-6 intervertebral level, 14 at the C6-7, and 11 at the C7-T1. T-2-weighted imaging was more useful than T-1-weighted imaging for the detection of thyroid nodules because of the hyperintense versus isointense appearance of the lesions. Thyroid carcinoma was identified at surgery in one patient. The detection rate was low compared with computed tomography with contrast medium and ultrasonography. Our results suggest that MR imaging has limited value for the detection of thyroid lesions and that the presence of such lesions cannot be denied based only on MR imaging of the cervical spine. However, asymptomatic thyroid lesions, including thyroid cancer, can be identified on MR images of the cervical spine, so we recommend that evaluation of these images should consider such lesions.