Ten Key Questions on the 2023 Bethesda “AUS” Category: Practical Guidance for Surgeons, Endocrinologists, and Pathologists

Authors

  • Sule Canberk Department of Pathology, Faculty of Medicine, RISE-Health, University of Porto, Porto, Portugal
  • Mariana Simplício Department of Pathology, Faculty of Medicine, RISE-Health, University of Porto, Porto, Portugal
  • Massimo Bongiovanni Department of Pathology and Cytology, UNILABS, Lausanne, Switzerland
  • Elisabete Rodrigues Department of Endocrinologia, H. S. João, Porto, Portugal
  • João Capela Endocrine and Cervical Surgery Service H. S. João, Porto, Portugal

DOI:

https://doi.org/10.34635/rpc.1129

Keywords:

Biopsy, Fine-Needle, Endocrine Surgical Procedures, Thyroid Neoplasms/pathology, Thyroid Neoplasms/surgery, Thyroid Nodule/pathology

Abstract

The 2023 Bethesda System for Reporting Thyroid Cytopathology (TBSRTC) redefines Atypia of Undetermined Significance (AUS) by introducing subclassification into AUS with nuclear atypia and AUS-other. This change reflects growing evidence that the risk of malignancy is subtype-dependent. For endocrine surgeons, this means that cytology can no longer be interpreted in isolation: AUS subtypes must be integrated with ultrasound patterns and, when appropriate, molecular data to guide individualized management.

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References

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Published

2026-01-01

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Review Article

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