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Risk factors for parapharyngeal and retropharyngeal metastases in papillary thyroid cancer: a matched case-control
Daojing Liu1,2, Xilin Nie3,4, Qing Yu3,4
1Postgraduate Training Base Alliance of Wenzhou Medical University (Zhejiang Cancer Hospital), Hangzhou, 310022, Zhejiang, China.
Purpose:
To analyze risk factors for parapharyngeal (PP) and retropharyngeal (RP) metastases in papillary thyroid cancer (PTC).
Methods:
A matched case-control study was conducted, comprising 130 age- and sex-matched cases of PTC. Among these cases, 50 had PP/RP metastases, 50 had central and/or lateral neck lymph node metastases, and 30 showed no lymph node metastases. Preoperative thyroid function test, computed tomography images, and postoperative pathological findings were collected. Associations between cases were assessed using univariate conditional logistic regression analysis, followed by multivariate conditional logistic regression analysis, and backward stepwise selection to predict risk factors for PP/RP metastases.
Results:
The study found that thyroglobulin was significantly associated with the development of PP/RP metastases [136.10(16.55-312.60) vs. 27.60(10.28-55.62) vs. 8.74(6.35-21.10) P < 0.001].
Conclusions:
The study concludes that thyroglobulin is a significant risk factor for PP/RP metastases in PTC. This finding emphasizes the importance of monitoring thyroglobulin levels in PTC patients to identify those at risk of developing PP/RP metastases.
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