Fibroepithelial Lesions of the Breast Update on Molecular Profile With Focus on Pediatric Population

center dot Context.-This review article derives from the breast pathology lecture at the Eighth Princeton Integrated Pathology Symposium (PIPS VIII).Objective.-To provide a literature review and update on fibroepithelial lesions of the breast with molecular findings and findings regarding the pediatric population. Data Sources.-The sources include extensive literature review, personal research, and experience.Conclusions.-Given significant differences in prog-nosis and management of fibroepithelial lesions, we aim to provide readers with pertinent definitions, patho-morphology, molecular findings, and management for each diagnosis, with insights on the pediatric popula-tion.(Arch Pathol Lab Med. 2023;147:38-45; doi: 10.5858/ arpa.2022-0011-RA)