Advancements in Breast Tumour Classification 2026

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This review outlines updates in the WHO Classification of Breast Tumours, 6th Edition, highlighting new sections on small biopsies and digital pathology, revisions to epithelial and invasive carcinoma classifications, and refinements in rare and fibroepithelial tumours. It emphasises the integration of molecular markers, AI, and multidisciplinary approaches to improve diagnostic accuracy and patient care.