Background: Appropriate surgical treatments of papillary thyroid carcinoma (PTC) located in the isthmus (PTCI) remains controversial. This study evaluated the outcomes from isthmusectomy in single PTCI and compared it with those for patients who underwent total thyroidectomy.
Material And Methods: This study enrolled 89 PTCI patients who underwent total thyroidectomy or isthmusectomy plus bilateral central lymph node dissection (BCLND). Patients were divided into Group A (n = 48) with total thyroidectomy plus BCLND and Group B (n = 41) with isthmusectomy plus BCLND. We compared the effects of different surgical modalities and clinicopathological characteristics on the prognosis of PTCI, and conducted a multivariate analysis to assess risk factors for bilateral central node metastasis for PTCI.
Results: There was no significant difference in postoperative recurrence-free survival (RFS) between Group A and Group B (P = 0.574). Temporary hypocalcemia occurred more in Group A than Group B (χ2 = 4.608, P = 0.032). There was no significant difference in metastatic lymph nodes between the 2 groups. However, there are 8 patients occurred bilateral central node metastasis in group A, and 6 in Group B (16.7% vs. 14.6%, respectively, P = 0.793). Multiple logistic analysis suggested that tumor size greater than 1.0 cm (OR = 9.72, 95% CI: 2.06-56.59, P < 0.001), and tumor located in the center of isthmus (OR = 5.19, 95% CI: 1.04-2.58,P < 0.001) were risk factors for bilateral central node metastasis.
Conclusions: Our results reveal that isthmusectomy plus BCLND may be a simple but feasible approach for selected PTCI patients, resulting in a better quality of life than total thyroidectomy plus BCLND.
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