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A Proposal to Stratify the Intermediate-Risk Thyroid Nodules According to the AACE/ACE/AME Guidelines with Ultrasound Features.

Abstract
To propose a risk stratification system for intermediate-risk thyroid nodules (TNs) according to American Association of Clinical Endocrinologists, American College of Endocrinology and Associazione Medici Endocrinologi Medical (AACE/ACE/AME) Guideline with ultrasound (US) features. 1000 patients with 1000 nodules (902 benign nodules and 98 malignant nodules) were included. All the nodules were confirmed with either fine needle aspiration (FNA) cytology and follow-up or histology results after surgery. Univariate analysis and binary multivariate logic regression analysis were applied to analyze the possible risk US features associated with malignancy. Receiver operating characteristic curves (ROC) were drew and compared. Univariate analysis and binary multivariate logistic regression analysis showed that indeterminate hyper-echoic spot (OR = 4.544), slightly ill-defined margin (OR = 2.559), slight hyper-echogenicity (OR = 1.992) and no macro-calcification (OR = 1.921) were risk factors for the intermediate-risk thyroid nodules (TNs). A predicting model was established based on the 4 risk factors. The risk rates of malignancy were 5.7% (26/455) in Stage I, 11.0% (49/445) in Stage II, 23.1% (21/91) in Stage III, 33.3% (3/9) in Stage IV. In conclusion, for the intermediate-risk TNs, special attention should be paid to the TNs with indeterminate hyper-echoic spot, slightly ill-defined margin, slight hyper-echogenicity, or no macro-calcification. The probability of malignancy increased with the number of risk factors increasing.
AuthorsXiao-Hong Deng, Li-Na Tang, Shui-Qing Liu, Xiao-Long Li, Ya-Ping He, Hui-Xiong Xu
JournalScientific reports (Sci Rep) Vol. 7 Issue 1 Pg. 17901 (12 20 2017) ISSN: 2045-2322 [Electronic] England
PMID29263433 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
Topics
  • Adult
  • Calcinosis (diagnosis, pathology)
  • Cytodiagnosis (methods)
  • Female
  • Humans
  • Male
  • Middle Aged
  • ROC Curve
  • Retrospective Studies
  • Risk Assessment
  • Risk Factors
  • Thyroid Gland (pathology)
  • Thyroid Neoplasms (diagnosis, pathology)
  • Thyroid Nodule (diagnosis, metabolism)
  • Ultrasonography (methods)

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