World Health Organization: Tumours of the Breast and Female Genital Organs (edited by Fattaneh A. Tavassoli and Peter Devilee) is the 4th in the Pathology and Genetics of Tumours series from the WHO. With an impressive set of multidisciplinary contributors from several continents, this book improves on previous books from that organization by representing a reasonable attempt towards consensus in their presentation of the various topics. The main strength of this book, as with others in the series, is that they are concise and emphasize the most salient points in each topic. While it is not meant to be an encyclopedic account of the various tumors, essential definitions, clinical findings, morphologic points, immunophenotypic variations and molecular and/or cytogenetic pathogenesis are well presented. This book does not resolve some of the more controversial issues in these fields (such as the prognostic significance of micropapillary patterns in ovarian serous borderline tumors or terminologic issues in intraductal breast proliferations), but at least provides another framework for further discussion. The illustrations are excellent and the text is well-supplemented with tables. Overall, I would recommend this book to trainees and practitioners alike