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- Title
Diagnostic performance of ATA, BTA and TIRADS sonographic patterns in the prediction of malignancy in histologically proven thyroid nodules.
- Authors
Chiaw Ling Chng; Hong Chang Tan; Wei Ying Lim; Pei Sze Chiam, Priscilla; Ling Zhu; Yi Ying Lim, Adoree; Chow Wei Too; Too, Chow Wei; Nadkarni, Nivedita Vikas; Chng, Chiaw Ling; Tan, Hong Chang; Lim, Wei Ying; Chiam, Priscilla Pei Sze; Zhu, Ling; Lim, Adoree Yi Ying
- Abstract
<bold>Introduction: </bold>We aimed to compare the malignancy risk stratification of histologically proven thyroid nodules using the 2015 American Thyroid Association (ATA) Management Guidelines, 2014 British Thyroid Association (BTA) Guidelines for the Management of Thyroid Cancer and the Thyroid Imaging Reporting and Data System (TIRADS).<bold>Methods: </bold>Thyroid nodules measuring > 1 cm resected over 5.5 years were retrospectively studied. Demographic information as well as cytology and histopathology results were collected. Static ultrasonography (US) images and radiologists' reports of each resected nodules were reviewed and classified based on the above risk classification systems.<bold>Results: </bold>A total of 167 thyroid nodules from 150 patients were examined. More malignant nodules were solid (78.4% vs. 62.5%; p = 0.049) or hypoechoic (70.6% vs. 28.6%; p < 0.001), and had irregular margins (35.3% vs. 8.0%; p < 0.001), taller-than-wide morphology (9.8% vs. 2.7%; p = 0.031), microcalcifications (33.3% vs. 8.0%; p < 0.001), disrupted rim calcifications (9.8% vs. 0.9%; p = 0.012) or associated abnormal cervical lymphadenopathy (13.7% vs. 0.9%; p = 0.001) compared with benign nodules. The guidelines' diagnostic performance was: ATA - sensitivity 98.0%, specificity 17.3%, positive predictive value (PPV) 35.0%, negative predictive value (NPV) 95.0%; BTA - sensitivity 90%, specificity 50.9%, PPV 45.5%, NPV 91.8%; and TIRADS - sensitivity 94.0%, specificity 28.2%, PPV 37.3%%, NPV 91.2%.<bold>Conclusion: </bold>Sonographic patterns outlined by the three guidelines displayed high sensitivity and NPV. Although isolated suspicious US features cannot predict malignancy risk, they should be considered when risk stratifying nodules that do not fit into particular sonographic patterns based on current guidelines.
- Subjects
THYROID cancer; ULTRASONIC imaging; CYTOLOGY; HISTOPATHOLOGY; LYMPHADENITIS; MEDICAL protocols; MEDICAL societies; RESEARCH evaluation; THYROID gland; THYROID gland tumors; RELATIVE medical risk; TREATMENT effectiveness; PREDICTIVE tests
- Publication
Singapore Medical Journal, 2018, Vol 59, Issue 11, p578
- ISSN
0037-5675
- Publication type
journal article
- DOI
10.11622/smedj.2018062