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Prophylactic central lymph node dissection for clinically node-negative papillary thyroid microcarcinoma: Influence on serum thyroglobulin level, recurrence rate, and postoperative complications.
MedLine Citation:
PMID:  21497873     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
BACKGROUND: In papillary thyroid microcarcinoma (PTMC), regional lymph node metastasis (LNM) is associated with a increased locoregional recurrence rate. Yet, prophylactic central lymph node dissection (CLND) targeting subclinical central LNM continues to be a matter of debate in the treatment of PTMC, which generally carries an excellent prognosis. The aim of our study was to investigate the benefits and risks of prophylactic CLND in patients with clinically node-negative PTMC. METHODS: This study included 232 patients who underwent surgery for clinically node-negative PTMC from 1999 to 2006. Of these 232 patients, 113 underwent only total thyroidectomy (TT) and 119 underwent TT in conjunction with prophylactic bilateral CLND (TT with CLND). We then compared serum thyroglobulin (Tg) levels, recurrence rates, and postoperative complications between the 2 groups (TT only and TT with CLND). RESULTS: The postoperative stimulated serum Tg level was significantly less in the TT with CLND group than in the TT only group (1.07 vs 2.24 ng/mL, respectively; P = .022). The stimulated Tg levels in the 2 groups became similar, however, after low-dose radioactive iodine treatment (0.44 ng/mL vs 0.69 ng/mL, respectively; P = 0.341). There was no significant difference in 3-year locoregional control rates after TT with CLND and TT only (98.3% vs 96.5%, respectively; P = .368). Although the frequency of permanent hypocalcemia was approximately 3 times greater in the TT with CLND group (5.6%) than in the TT only group (1.8%), this finding did not reach statistical significance. CONCLUSION: With prophylactic CLND, the postoperative Tg level can significantly decrease. However, prophylactic CLND is not helpful in decreasing short-term locoregional recurrence in patients with clinically node-negative PTMC. Finally, the risk of permanent hypocalcemia may increase after CLND.
Authors:
Yoon Kyoung So; Min Young Seo; Young-Ik Son
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-4-15
Journal Detail:
Title:  Surgery     Volume:  -     ISSN:  1532-7361     ISO Abbreviation:  -     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-4-18     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0417347     Medline TA:  Surgery     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 Mosby, Inc. All rights reserved.
Affiliation:
Department of Otorhinolaryngology-Head and Neck Surgery, Inje University College of Medicine, Haeundae Paik Hospital, Busan, South Korea.
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