• Annals of surgery · Sep 2020

    Randomized Controlled Trial

    A Randomized Controlled Clinical Trial: No Clear Benefit to Prophylactic Central Neck Dissection in Patients With Clinically Node Negative Papillary Thyroid Cancer.

    • Rebecca S Sippel, Sarah E Robbins, Jennifer L Poehls, Susan C Pitt, Herbert Chen, Glen Leverson, Kristin L Long, David F Schneider, and Nadine P Connor.
    • Division of Endocrine Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin.
    • Ann. Surg. 2020 Sep 1; 272 (3): 496-503.

    ObjectiveThe aim of this prospective randomized-controlled trial was to evaluate the risks/benefits of prophylactic central neck dissection (pCND) in patients with clinically node negative (cN0) papillary thyroid cancer (PTC).BackgroundMicroscopic lymph node involvement in patients with PTC is common, but the optimal management is unclear.MethodsSixty patients with cN0 PTC were randomized to a total thyroidectomy (TT) or a TT+ pCND. All patients received postoperative laryngoscopies and standardized radioiodine treatment. Thyroglobulin (Tg) levels and/or neck ultrasounds were performed at 6 weeks, 6 months, and 1 year.ResultsTumors averaged 2.2 ± 0.2 cm and 11.9% had extra-thyroidal extension. Thirty patients underwent a pCND and 27.6% had positive nodes (all ≤6 mm). Rates of postoperative PTH < 10 (33.3% vs 24.1%, P = 0.57) and transient nerve dysfunction (13.3% vs 10.3%, P = 1.00) were not significantly different between groups. Six weeks after surgery, both TT and TT + pCND were equally likely to achieve a Tg < 0.2 (54.5% vs 66.7%, P = 0.54) and/or a stimulated Tg (sTg) <1 (59.3% vs 64.0%, P = 0.78). At 1 year, rates of Tg < 0.2 (88.9% vs 90.0%, P = 1.00) and sTg < 1 (93.8% vs 92.3%, P = 1.00) remained similar between groups. Neck ultrasounds at 1 year were equally likely to be read as normal (85.7% in TT vs 85.1% in pCND, P = 1.00).ConclusionscN0 PTC patients treated either with TT or TT + pCND had similar complication rates after surgery. Although microscopic nodes were discovered in 27.6% of pCND patients, oncologic outcomes were comparable at 1 year.Copyright © 2020 Wolters Kluwer Health, Inc. All rights reserved.

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