Preoperative high-frequency ultrasound in diagnosis of cervical lymph node metastasis in patients with papillary thyroid carcinoma
10.13929/j.1003-3289.201803009
- Author:
Rui BU
1
Author Information
1. Department of Medical Ultrasound, The Second Affiliated Hospital of Kunming Medical University
- Publication Type:Journal Article
- Keywords:
Carcinoma, papillary;
Lymph nodes;
Neoplasm metastasis;
Thyroid neoplasms;
Ultrasonography
- From:
Chinese Journal of Medical Imaging Technology
2019;35(1):55-58
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore preoperative high-frequency ultrasound in diagnosis of cervical lymph node metastases in patients with papillary thyroid carcinoma (PTC). Methods Data of 212 patients with PTC were analyzed retrospectively.The patients were divided into cervical lymph node non-metastasis group (n=103) and cervical lymph node metastasis group (n=109). The ultrasonic characteristics of the two groups were compared, and lymph node distribution was analyzed in cervical lymph node metastases group. Results The ultrasonic characteristics of cervical lymph node metastasis group included ill-defined boundary between the cortex and medulla of the cervical lymph nodes, combined with the absence of lymphatic hilum and echo enhancement (94/109, 86.24%), the long axis and short axis ratio less than 2 (77/109, 70.64%), the short axial diameters more than 5 mm (45/109, 41.28%), the internal multiple punctuate echogenic foci (19/109, 17.43%), the peripheral vascularity or mixed vascularity (58/109, 53.21%), the abundant blood supply (53/109, 48.62%), while those in cervical lymph node non-metastasis group were 16.50% (17/103), 2.91% (3/103), 11.65% (12/103), 1.94% (2/103), 17.48% (18/103) and 16.50% (17/103), respectively. All these ultrasonic characteristics were significantly different between the two groups (all P<0.001). Taken surgical division as standards, the diagnostic accuracy of preoperative ultrasound for lymph node dissection in cervical lymph node metastasis group was 57.58% (38/66) in level , 75.00% (3/4) in level , 81.25% (13/16) in level , and 76.92% (10/13) in level III, 70.00% (7/10) in level Ⅱ. Conclusion Preoperative PTC with cervical lymph node metastasis has characteristic high-frequency ultrasound features, which may guide surgical treatment strategy in cervical lymph node dissection.
