Yanli Zhu; Yuntao Song; Guohui Xu; Zhihui Fan; Wenhao Ren

doi:10.21147/j.issn.1000-9604.2020.02.02

Chin J Cancer Res> 2020, Vol. 32> Issue(2) : 140-148

Citation: Zhu Y, Song Y, Xu G, Fan Z, Ren W. The Bethesda System for Reporting Thyroid Cytopathology (TBSRTC): A report of 2,781 cases in a Chinese population. Chin J Cancer Res 2020;32(2):140-148. doi: 10.21147/j.issn.1000-9604.2020.02.02 shu

The Bethesda System for Reporting Thyroid Cytopathology (TBSRTC): A report of 2,781 cases in a Chinese population

1.
Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing) Department of Pathology
2.
Department of Head and Neck Surgery
3.
Department of Ultrasound, Peking University Cancer Hospital and Institute, Beijing 100142, China

Correspondence to: Wenhao Ren. Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Pathology, Peking University Cancer Hospital and Institute, Beijing 100142, China. Email: 295723446@qq.com
Submitted: Sep 04, 2019
Accepted for publication: Mar 16, 2020

Figures(1) / Tables(5)

Objective: To evaluate the diagnostic utility of The Bethesda System for Reporting Thyroid Cytology (TBSRTC) at Peking University Cancer Hospital, the incidence of noninvasive follicular thyroid neoplasms with papillary-like nuclear features (NIFTP), and the impact of reclassification on cytopathological outcomes. Methods: We performed a retrospective study of thyroid fine-needle aspiration (FNA) cases between April 2014 and March 2019. The FNA results were classified according to TBSRTC. Post-surgery histological findings were followed up. Results: A total of 2,781 thyroid FNAs were performed. The incidences of the 6 diagnostic categories (DCs I−VI) were 14.8%, 17.1%, 15.8%, 2.3%, 11.6% and 38.5%, respectively. A total of 1,122 patients (40.3%) had corresponding histological results. NIFTP accounted for 0.4% of papillary thyroid carcinoma (PTC) cases, and there was no significant difference in the risk of malignancy (ROM) for each TBSRTC DC between “NIFTP=carcinoma (Ca)” and “NIFTP≠Ca”. When “NIFTP=Ca”, the sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and accuracy of TBSRTC were 98.0%, 84.0%, 99.4%, 58.3%, and 97.5%, respectively. When “NIFTP≠Ca”, the sensitivity, specificity, PPV, NPV and accuracy of the TBSRTC were 98.1%, 81.5%, 99.3%, 61.1%, and 97.5%, respectively. Conclusions: TBSRTC is effective in the preoperative diagnosis of thyroid nodules in Peking University Cancer Hospital. The impact of the reclassification of NIFTP on cytopathological outcomes is limited because of its low incidence, and the revised ROMs are not suitable for Asian patients.
- Bethesda system;
- thyroid;
- FNA;
- cytopathology;
- NIFTP
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沈阳化工大学材料科学与工程学院沈阳 110142