Fine Needle Aspiration Cytology vs. Core Needle Biopsy for Thyroid Nodules: A Prospective, Experimental Study Using Surgical Specimen

Hyuk Kwon, Jandee Lee, Soon Won Hong, Hyeong Ju Kwon, Jin Young Kwak, Jung Hyun Yoon

Research output: Contribution to journalArticlepeer-review

Abstract

Purpose To evaluate and compare the diagnostic outcomes of ultrasonography (US)-guided fine needle aspiration (FNA) and core needle biopsy (CNB) performed on the same thyroid nodule using a surgical specimen for direct comparison. Materials and Methods We included 89 thyroid nodules from 88 patients from February 2015 to January 2016. The inclusion criterion was thyroid nodules measuring ≥ 20 mm (mean size: 40.0 ± 15.3 mm). Immediately after surgical resection, FNA and subsequent CNB were performed on the surgical specimen under US guidance. FNA and CNB cytopathologic results on the specimen were compared with the surgical diagnosis. Results Among the 89 nodules, 30 were malignant and 59 were benign. Significantly higher inconclusive rates were seen in FNA for malignant than benign nodules (80.0% vs. 39.0%, p < 0.001). For CNB, conclusive and inconclusive rates did not differ between benign and malignant nodules (p = 0.796). Higher inconclusive rates were seen for FNA among cancers regardless of US features, and in the subgroup of size ≥ 40 mm (62.5% vs. 22.9%, p = 0.028). Eleven cancers were diagnosed with CNB (36.7%, 11/30), while none was diagnosed using FNA. Conclusion In this experimental study using surgical specimens, CNB showed a potential to provide improved diagnostic sensitivity for thyroid cancer, especially when a conclusive diagnosis is limited with FNA.

Translated title of the contribution갑상선 결절에 대한 세침 흡인 세포 검사와 중심부 바늘 생검의 비교: 수술 검체를 기반으로 한 전향적, 실험적 비교 연구
Original languageEnglish
JournalJournal of the Korean Society of Radiology
Volume83
DOIs
Publication statusPublished - 2022 Jan

Bibliographical note

Publisher Copyright:
© 2021 The Korean Society of Radiology

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging

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