舌中淋巴结：影像学上的患病率及其对口腔癌分期的潜在影响
Median Lingual Lymph Nodes: Prevalence on Imaging and Potential Implications for Oral Cavity Cancer Staging.
作者信息
Tomblinson Courtney M, Nagel Thomas H, Hu Leland S, Zarka Matthew A, Hoxworth Joseph M
机构信息
From the Departments of *Radiology, †Otolaryngology Head and Neck Surgery, and ‡Laboratory Medicine and Pathology, Mayo Clinic, Phoenix, AZ.
出版信息
J Comput Assist Tomogr. 2017 Jul/Aug;41(4):528-534. doi: 10.1097/RCT.0000000000000568.
OBJECTIVE
This study sought to estimate the prevalence of median lingual lymph node (MLLN) metastases from oral cavity squamous cell carcinoma (OCSCC) and determine the frequency with which MLLNs can be identified with magnetic resonance imaging (MRI) in control subjects.
METHODS
Pathology reports were used to identify patients with surgically treated OCSCC who underwent preoperative positron emission tomography-computed tomography to define the prevalence of MLLN metastases. As a control group, 500 consecutive face-neck MRIs from noncancer patients were reviewed for structures consistent with MLLNs.
RESULTS
In the study group, 1 (0.95%) of 105 OCSCC cases demonstrated a single MLLN metastasis from a lateral tongue tumor (T4aN2c). The MLLN exceeded 1 cm in all planes and was abnormal in morphology. The frequency of suspected MLLNs in controls was 1.0%, with a maximum measurement of 0.9 cm.
CONCLUSIONS
Median lingual lymph nodes are infrequently identified with MRI in controls, concordant with the low prevalence of metastases from OCSCC to this inconstant nodal group.
目的
本研究旨在估计口腔鳞状细胞癌（OCSCC）舌中淋巴结（MLLN）转移的发生率，并确定在对照受试者中通过磁共振成像（MRI）识别MLLN的频率。
方法
利用病理报告识别接受手术治疗的OCSCC患者，这些患者术前行正电子发射断层扫描 - 计算机断层扫描以确定MLLN转移的发生率。作为对照组，对500例非癌症患者的连续面颈部MRI进行回顾，以寻找与MLLN一致的结构。
结果
在研究组中，105例OCSCC病例中有1例（0.95%）表现为来自舌侧肿瘤（T4aN2c）的单个MLLN转移。该MLLN在所有平面上均超过1 cm，形态异常。对照组中疑似MLLN的频率为1.0%，最大测量值为0.9 cm。
结论
在对照受试者中，通过MRI很少能识别出舌中淋巴结，这与OCSCC转移至这个不恒定淋巴结组的低发生率相一致。
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