title: The atypical thyroid fine-needle aspiration: past, present, and future.
abstract: Thyroid fine-needle aspiration has developed into a key test in the evaluation of thyroid nodules. Although the interpretation of thyroid aspirates containing mild abnormalities is problematic, the introduction of the atypia of undetermined significance/follicular lesion of undetermined significance (AUS/FLUS) category in The Bethesda System for Reporting Thyroid Cytopathology (TBSRTC) has helped to delineate such cases in a systematic and clinically meaningful manner. Herein the authors review the cytomorphologic features associated with the AUS/FLUS interpretation and summarize the results of studies conducted since the implementation of TBSRTC.
authors.affiliation: Institute of Pathology, Locarno, Switzerland.
authors.forename: Massimo
authors.initials: M
authors.lastname: Bongiovanni
authors.forename: Jeffrey F
authors.initials: JF
authors.lastname: Krane
authors.forename: Edmund S
authors.initials: ES
authors.lastname: Cibas
authors.forename: William C
authors.initials: WC
authors.lastname: Faquin
mesh_terms: D044963:Biopsy, Fine-Needle; D006801:Humans; D013964:Thyroid Neoplasms / Q000145:classification* / Q000473:pathology*