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Annals of Surgical Oncology

, Volume 21, Issue 13, pp 4181–4187 | Cite as

Predictive Factors and Pattern of Locoregional Recurrence After Prophylactic Central Neck Dissection in Papillary Thyroid Carcinoma

  • Brian Hung-Hin Lang
  • Diane T. Y. Chan
  • Kai Pun Wong
  • Kandy K. C. Wong
  • Koon Yat Wan
Endocrine Tumors

Abstract

Background

Prophylactic central neck dissection (pCND) at the time of the total thyroidectomy (TT) remains controversial in clinically nodal-negative (cN0) papillary thyroid carcinoma. Our study was designed to examine the predictive factors and pattern of locoregional recurrence (LRR) after pCND in the context of the postoperative stimulated Tg (sTg) level.

Methods

A total of 341 patients who underwent TT and unilateral pCND were analyzed. Patients with an identifiable lesion on ultrasonography or whole-body scan within 6 months of surgery were excluded. LRR was defined as an identifiable lesion on USG, which was later confirmed by cytology/histology. Preablation sTg level was taken 2 months after surgery, whereas postablation sTg level was taken 8 months after surgery. Cox regression was used in the univariate and multivariate analyses to identify significant independent factors for LRR.

Results

After a follow-up of 66.6 ± 38.6 months, 14 (4.1 %) suffered from LRR. The duration to first LRR was 36.4 ± 21.7 months. The estimated 5- and 10-year LRR rates were 5.1 and 6.1 %, respectively. Of these 14 LRR, 3 (21.4 %) involved the central compartment alone, 9 (64.3 %) involved the lateral compartment alone, and 2 (14.3 %) involved both central and lateral compartments. After adjusting for other clinicopathological factors, postablation sTg level ≥ 1 µg/L (hazard ratio 265.109, 95 % confidence interval 1.132–62075.644, p = 0.045) was the only independent predictor of LRR.

Conclusions

Annualized risk of LRR after pCND was approximately 1 % in the first 5 years and 0.2 % in the subsequent 5 years. Most (78.6 %) LRRs involved the lateral compartment. Postablation sTg ≥ 1 µg/L significantly predicted risk of LRR.

Keywords

Papillary Thyroid Carcinoma Total Thyroidectomy Lateral Compartment Vocal Cord Palsy Central Nodal Metastasis 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Society of Surgical Oncology 2014

Authors and Affiliations

  • Brian Hung-Hin Lang
    • 1
    • 3
  • Diane T. Y. Chan
    • 1
  • Kai Pun Wong
    • 1
  • Kandy K. C. Wong
    • 1
  • Koon Yat Wan
    • 2
  1. 1.Department of SurgeryThe University of Hong KongHong Kong SARChina
  2. 2.Department of Clinical OncologyThe University of Hong KongHong Kong SARChina
  3. 3.Department of SurgeryQueen Mary HospitalHong Kong SARChina

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