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Postoperative Neck Ultrasonography Surveillance After Thyroidectomy in Patients With Medullary Thyroid Carcinoma: A Multicenter Study

Authors
 Hye Shin Ahn  ;  Dong Wook Kim  ;  Yoo Jin Lee  ;  Chang Yoon Lee  ;  Ji-Hoon Kim  ;  Yoon Jung Choi  ;  Song Lee  ;  Inseon Ryoo  ;  Jung Yin Huh  ;  Jin Yong Sung  ;  Jin Young Kwak  ;  Hye Jin Baek 
Citation
 Frontiers in Endocrinology, Vol.9 : 102, 2018 
Journal Title
 Frontiers in Endocrinology 
Issue Date
2018
Keywords
malignancy ; medullary thyroid carcinoma ; recurrence ; surveillance ; thyroid ; ultrasonography
Abstract
Background: For detecting tumor recurrence of medullary thyroid carcinoma (MTC) in the neck, an appropriate frequency and interval of postoperative ultrasonography (US) surveillance remains unclear. This study aimed to assess an appropriate interval and frequency of postoperative neck US surveillance for detecting tumor recurrence in patients who had undergone thyroid surgery due to MTC. Methods: A total of 86 patients who had undergone thyroid surgery for the treatment of MTC and had at least one postoperative US follow-up examination at any of nine affiliated hospitals were included. Postoperative follow-up US, clinical, and histopathological results of patients were reviewed. The tumor recurrence/persistence rate of MTC was investigated, and the interval and session number of postoperative follow-up US and clinicopathologic factors were compared between tumor recurrence/persistence and non-recurrence groups. Results: Of the 86 patients, 22 (25.6%) showed tumor recurrence/persistence. Of the 22 patients with tumor recurrence/persistence, 11 (50%) showed structural recurrence/persistence in the neck on follow-up US. In these 11 patients, the mean interval and session number of postoperative follow-up US between initial surgery and the first US detection of recurrence/persistence was 41.3 +/- 39.3 months (range, 6-128 months) and 2.6 +/- 2.3 (range, 1-8), respectively. On follow-up US, 6 (54.5%, 6/11) were diagnosed with tumor recurrence/persistence within 3 years of the initial surgery. Tumor recurrence/persistence was significantly correlated with TNM stage (p < 0.001) and multiplicity/bilaterality (p = 0.013). Conclusion: For detecting MTC recurrence/persistence, postoperative US surveillance at 1-year intervals may be sufficient within the first 3 years after thyroid surgery, but depending on the presence of relevant risk factors, annual or biannual US surveillance may be recommendable for 4-10 years after thyroid surgery.
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/162144
Files in This Item:
T201800965.pdf Download
DOI
10.3389/fendo.2018.00102
Appears in Collections:
1. Journal Papers (연구논문) > 1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실)
Yonsei Authors
곽진영(Kwak, Jin Young) ORCID logo https://orcid.org/0000-0002-6212-1495
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