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Lobectomy and Prophylactic Central Neck Dissection for Papillary Thyroid Microcarcinoma: Do Involved Lymph Nodes Mandate Completion Thyroidectomy?

 Cho Rok Lee  ;  Haiyoung Son  ;  Sohee Lee  ;  Sang-Wook Kang  ;  Jong Ju Jeong  ;  Kee-Hyun Nam  ;  Woong Youn Chung  ;  Cheong Soo Park 
 WORLD JOURNAL OF SURGERY, Vol.38(4) : 872-877, 2014 
Journal Title
Issue Date
Adult ; Aged ; Aged, 80 and over ; Carcinoma, Papillary/pathology ; Carcinoma, Papillary/surgery* ; Female ; Follow-Up Studies ; Humans ; Lymphatic Metastasis ; Male ; Middle Aged ; Neck Dissection*/methods ; Retrospective Studies ; Survival Analysis ; Thyroid Neoplasms/pathology ; Thyroid Neoplasms/surgery* ; Thyroidectomy/methods* ; Treatment Outcome
Papillary Thyroid Carcinoma ; National Comprehensive Cancer Network ; Central Lymph Node ; American Thyroid Association ; Completion Thyroidectomy
BACKGROUND: The present study was designed to investigate the necessity of completion thyroidectomy for patients who underwent thyroid lobectomy for low-risk papillary thyroid microcarcinoma (PTMC) that was later pathologically diagnosed as central lymph node (CLN) metastasis. METHODS: Between 1986 and 2001, we assessed 551 patients who underwent thyroidectomy with prophylactic ipsilateral central compartment neck dissection, and 409 patients were followed-up completely. Thyroid lobectomy were performed in 281 and 128 patients, respectively. The patients were divided into two groups according to CLN metastasis. Clinicopathological profiles and follow-up details were investigated by retrospective chart review. RESULTS: The CLN-positive and -negative groups were comprised of 43 (15.2 %) and 238 patients (84.8 %), respectively. The mean ages of the two groups were not significantly different (p > 0.05). The mean tumor size of the CLN-positive group (6.8 mm) was significantly larger than that of the CLN-negative group (5.6 mm; p < 0.05). Microscopic capsular invasion was significantly higher in the CLN-positive group (51.2 vs. 23.9 %; p < 0.05). Overall, 21 patients (7.4 %, 21/281) experienced recurrence. Among these, 2 (4.7 %, 2/43) and 19 (8.0 %, 19/238) were in the CLN-positive and -negative groups, respectively. There was no significant correlation between CLN metastasis and tumor recurrence. CONCLUSIONS: Postoperative recurrence was lower in the CLN-positive group, and there was no significant correlation between CLN metastasis and tumor recurrence. Our results suggest that it is not necessary to perform completion thyroidectomy for PTMC patients who have undergone thyroid lobectomy and who have been pathologically diagnosed with CLN metastasis.
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1. College of Medicine (의과대학) > Dept. of Surgery (외과학교실) > 1. Journal Papers
Yonsei Authors
Kang, Sang Wook(강상욱) ORCID logo https://orcid.org/0000-0001-5355-833X
Nam, Kee Hyun(남기현) ORCID logo https://orcid.org/0000-0002-6852-1190
Park, Cheong Soo(박정수)
Son, Hai Young(손해영)
Lee, So Hee(이소희)
Lee, Cho Rok(이초록) ORCID logo https://orcid.org/0000-0001-7848-3709
Chung, Woong Youn(정웅윤)
Jeong, Jong Ju(정종주) ORCID logo https://orcid.org/0000-0002-4155-6035
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