Risk factors for Delphian lymph node metastasis in papillary thyroid carcinoma

Abstract

Objective To investigate the risk factors for Delphian lymph node metastasis in papillary thyroid carcinoma. Methods Retrospective analysis of 99 patients treated in Taizhou Cancer Hospital from July 2017 to July 2019 were done in this study. Delphian lymph nodes metastasis related with tumor diameter, location or central lymph node metastasis were analyzed. Results The rate of detected Delphian lymph node in the patients with radical operation of papillary thyroid carcinoma was 70.7% (70/99) with the metastasis rate 18.6% (13/70). Totally 13 in 99 cases (13.1%) were found metastasis. Univariate analysis showed that Delphian lymph node metastasis was related with the number of lymph nodes detected (t=7.040, P=0.008), age (t=4.714, P=0.030), the foci located at isthmus (t=11.588, P=0.001), and pretracheal lymph node metastasis (t=8.659, P=0.003). There was no significant relationship between Delphian lymph node metastasis and gender, tumor diameter, multiple foci, bilateral lesions, extrathyroid invasion, or foci located in upper third of thyroid lobe (P>0.05). Multivariate Logistics analysis showed that isthmus carcinoma (P=0.010, OR=9.079), more than 2 Delphian lymph nodes (P=0.005, OR=18.739), and pretracheal lymph node metastasis (P=0.013, OR=8.530) were independent risk factors of Delphian lymph node metastasis. Conclusions It should be paid more attention to Delphian lymph node during central department lymph node dissection for those patients with thyroid isthmus carcinoma, pretracheal lymph node metastasis and many lymph nodes.

Keywords

• |papillary thyroid carcinoma|delphian lymph node|central lymph node dissection