Pr. Philippe Vielh directed the Clinical Cytopathology and Cytometry Unit at Institut Curie (Paris, France) for 13 years before moving to Gustave Roussy comprehensive cancer center (Villejuif, France) where he headed the Cytopathology Unit (2003-2015), the HistoCytoPathology Unit of the Translational Research Laboratory (2007-2014), and the institutional Biobank (2011-2014). He then worked (2015-2019) at the Laboratoire National de Santé (Dudelange, Luxembourg) where he was Deputy Chief of Anatomic Pathology and mainly in charge of Cytopathology.Dr Vielh is interested in the study of omics of breast and thyroid tumors. He has authored more than 300 articles in peer-reviewed journals, 6 books and 25 book chapters. Philippe Vielh is the series’ Editor of the Karger book collection entilted « Monograph in Clinical Cytology ». He is on the editorial board and reviews for Archives of Pathology and Laboratory Medicine, Diagnostic Cytopathology, Cancer Cytopathology, Acta Cytologica, Journal of the American Society of Cytology, Journal of Pathology and Translational Medicine, Cytopathology, and Cytojournal. He is member of the American Society of Cytopathology (ASC) and holds a number of national and international society memberships including the fellowship of the International Academy of Cytology (FIAC). Philippe was honored to serve as President of the French Society of Cytology (SFCC) for 9 years (1996-2006), President of the 31st European Congress of Cytology in 2005 (Paris, France) and Secretary General of the European Federation of Cytology Societies (EFCS) for 7 years (2005-2012). He chaired the 18th International Congress of Cytology in Paris (May 2013), was President of the International Academy of Cytology (IAC) for 3 years (May 2013-June 2016) and then IAC Past-President until May 2019. He is now Chair of the European Society of Pathology (ESP) Cytopathology Working Group since 2018.Philippe is Professor of Pathology affiliated at the Faculty of Medicine of the University of Porto (Portugal) since December 2017. He is recipient of the 2007 Papanicolaou Society of Pathology’s L.C. Tao “Educator of the Year” Award, the 2016 International Academy of Cytology’s Maurice Goldblatt Award and the 2019 American Society of Cytopathology’s International Achievement Award.