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Ethanol ablation of predominantly cystic thyroid nodules: evaluation of recurrence rate and factors related to recurrence.

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dc.contributor.authorSuh, CH-
dc.contributor.authorBaek, JH-
dc.contributor.authorHa, EJ-
dc.contributor.authorChoi, YJ-
dc.contributor.authorLee, JH-
dc.contributor.authorKim, JK-
dc.contributor.authorChung, KW-
dc.contributor.authorKim, TY-
dc.contributor.authorKim, WB-
dc.contributor.authorShong, YK-
dc.date.accessioned2017-04-04T10:26:41Z-
dc.date.available2017-04-04T10:26:41Z-
dc.date.issued2015-
dc.identifier.issn0009-9260-
dc.identifier.urihttp://repository.ajou.ac.kr/handle/201003/13777-
dc.description.abstractAIM: To evaluate recurrence rate and associated risk factors for recurrence after ethanol ablation (EA) in patients with predominantly cystic thyroid nodules.

MATERIALS AND METHODS: This observational study was approved by the Ethics Committee of the Institutional Review Board and informed consent for procedures was obtained. From April 2009 to April 2013, 107 consecutive patients with predominantly cystic nodules were treated using EA. Recurrence was defined as nodules showing a residual solid portion with internal vascularity, cosmetic problems remaining, or persistent symptoms, and patients who requested additional therapy to resolve their symptomatic or cosmetic problems. Delayed recurrence was defined as treated nodules that showed no recurrent features at 1 month, but showed newly developed recurrent features during the longer follow-up period. Multivariate analysis was used for variables to demonstrate the independent factors related to volume reduction.

RESULTS: One month after EA, 18.7% of patients (20/107) showed recurrence. Among 87 patients with non-recurrence, 24.1% (21/87) showed delayed recurrence. The total recurrence rate was 38.3% (41/107). Patients with recurrence (n = 41) were treated using radiofrequency ablation (n = 28), second EA (n = 4), and refused further treatment (n = 9). These patients responded well to repeat EA and radiofrequency ablation. Multivariate analysis demonstrated that the initial nodule volume (>20 ml; p < 0.036) and vascularity (grade >1; p < 0.049) were independent predictors of volume reduction at last follow-up.

CONCLUSIONS: The results revealed that although EA seemed to be effective during the initial period, delayed recurrence should be considered during longer-term follow-up. The independent predictors of recurrence were initial volume (>20 ml) and vascularity.
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dc.language.isoen-
dc.subject.MESHAdolescent-
dc.subject.MESHAdult-
dc.subject.MESHAged-
dc.subject.MESHAged, 80 and over-
dc.subject.MESHCatheter Ablation-
dc.subject.MESHChild-
dc.subject.MESHCysts-
dc.subject.MESHEthanol-
dc.subject.MESHFemale-
dc.subject.MESHHumans-
dc.subject.MESHMale-
dc.subject.MESHMiddle Aged-
dc.subject.MESHNeoplasm Recurrence, Local-
dc.subject.MESHRisk Factors-
dc.subject.MESHThyroid Nodule-
dc.subject.MESHTreatment Outcome-
dc.subject.MESHUltrasonography, Interventional-
dc.subject.MESHYoung Adult-
dc.titleEthanol ablation of predominantly cystic thyroid nodules: evaluation of recurrence rate and factors related to recurrence.-
dc.typeArticle-
dc.identifier.pmid25443776-
dc.identifier.urlhttps://linkinghub.elsevier.com/retrieve/pii/S0009-9260(14)00437-1-
dc.contributor.affiliatedAuthor하, 은주-
dc.type.localJournal Papers-
dc.identifier.doi10.1016/j.crad.2014.09.008-
dc.citation.titleClinical radiology-
dc.citation.volume70-
dc.citation.number1-
dc.citation.date2015-
dc.citation.startPage42-
dc.citation.endPage47-
dc.identifier.bibliographicCitationClinical radiology, 70(1). : 42-47, 2015-
dc.identifier.eissn1365-229X-
dc.relation.journalidJ000099260-
Appears in Collections:
Journal Papers > School of Medicine / Graduate School of Medicine > Radiology
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