The previous edition of The Bethesda System for Reporting Thyroid Cytopathology provided key updates and advances in the field, reflecting the significant developments since the first edition was published in 2010. These updates included revised clinical guidelines for the management of thyroid nodules, the integration of molecular testing as a complement to cytopathologic analysis, and the reclassification of the non-invasive follicular variant of papillary thyroid carcinoma to non-invasive follicular thyroid neoplasm with papillary-like nuclear features (NIFTP). These changes have enhanced diagnostic accuracy and management strategies, making this edition a crucial resource for pathologists and clinicians working in thyroid care.