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dc.contributor.authorMoran Amiten_US
dc.contributor.authorMongkol Boonsripitayanonen_US
dc.contributor.authorRyan P. Goepferten_US
dc.contributor.authorSamantha Tamen_US
dc.contributor.authorNaifa L. Busaidyen_US
dc.contributor.authorMaria E. Cabanillasen_US
dc.contributor.authorRamona Daduen_US
dc.contributor.authorJeena Vargheseen_US
dc.contributor.authorSteven G. Waguespacken_US
dc.contributor.authorNeil D. Grossen_US
dc.contributor.authorPaul Grahamen_US
dc.contributor.authorMichelle D. Williamsen_US
dc.contributor.authorErich M. Sturgisen_US
dc.contributor.authorMark E. Zafereoen_US
dc.contributor.otherUniversity of Texas MD Anderson Cancer Centeren_US
dc.contributor.otherFaculty of Medicine, Siriraj Hospital, Mahidol Universityen_US
dc.date.accessioned2019-08-23T11:41:43Z-
dc.date.available2019-08-23T11:41:43Z-
dc.date.issued2018-10-01en_US
dc.identifier.citationAnnals of Surgical Oncology. Vol.25, No.11 (2018), 3380-3388en_US
dc.identifier.issn15344681en_US
dc.identifier.issn10689265en_US
dc.identifier.other2-s2.0-85050128518en_US
dc.identifier.urihttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85050128518&origin=inwarden_US
dc.identifier.urihttp://repository.li.mahidol.ac.th/dspace/handle/123456789/46289-
dc.description.abstract© 2018, Society of Surgical Oncology. Background: According to the 8th edition American Joint Committee on Cancer staging system, extrathyroidal extension (ETE) and primary tumor size remain the principle determinants of T stage. However, impact of gross ETE into strap muscles on survival remains controversial. Patients and Methods: A retrospective review of 2084 patients with ≤ 4 cm nonmetastatic differentiated thyroid cancer who underwent surgery between 2000 and 2015 was conducted. Patients were divided into three groups according to degree of ETE: no ETE (group 1), ETE into perithyroidal soft tissue (group 2), and gross ETE into strap muscle (group 3). Survivals were analyzed using Kaplan–Meier method and compared using log-rank test. Factors predictive of survival were analyzed using Cox proportional hazard model. Results: Ten-year disease-free survival (DFS) of patients in groups 1–3 was 90, 82, and 83%, respectively (p = 0.003). On multivariate analysis, age ≥ 55 years, male sex, and pathologic N1b category predicted significantly worse DFS, while ETE into perithyroidal soft tissue or gross strap muscle invasion did not predict worse DFS. Overall survival (p = 0.957) and disease-specific survival (p =0.910) were not significantly different between the three groups. There was a statistically significant difference in locoregional recurrence-free survival between groups 1 and 2 [HR 2.02, 95% CI 1.06–3.94]. Conclusion: Gross strap muscle invasion may not be an important survival prognostic factor for staging purposes. Although both gross strap muscle invasion and perithyroidal soft tissue extension may be predictive for locoregional recurrence, the distinction between them may not be as important for postoperative risk stratification.en_US
dc.rightsMahidol Universityen_US
dc.source.urihttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85050128518&origin=inwarden_US
dc.subjectMedicineen_US
dc.titleExtrathyroidal Extension: Does Strap Muscle Invasion Alone Influence Recurrence and Survival in Patients with Differentiated Thyroid Cancer?en_US
dc.typeArticleen_US
dc.rights.holderSCOPUSen_US
dc.identifier.doi10.1245/s10434-018-6563-xen_US
Appears in Collections:Scopus 2018

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