The second edition of “Diagnosis and Management of Ovarian Disorders” was published in 2003, inspired by the widely enthusiastic reception of the first edition and the many advances in discovery and altered clinical practice during the 7 years following the publication of the first edition. In keeping with his purpose of providing the most current information, and presenting the views of not only credentialed but authoritative and respected contributors, the late Dr Albert Altchek organized a third edition of this book with his fellow editors. Unfortunately, he was not able to enjoy the final submissions by the selected contributors, and we, the current editors, dedicate this new edition, now entitled Altchek’s Diagnosis and Management of Ovarian Disorders, to him. We celebrate his long career as a clinician, a curious and imaginative clinical investigator, and an informative and prolific author. We thank him for this, and we miss him. While not dividing this new edition formally into various sections, we have preserved the approach of inviting experts in the fields of physiology, pathology, and basic science; authorities in the newest diagnostic procedures, and new approaches which translate molecular discovery to applied clinical techniques; and finally experienced clinicians who present contemporary management. While we have encouraged the authors to present data and opinions which are “evidence based,” we have also required them to rely on “best evidence.” This, of course, will occasionally result in differing templates for clinical management, and we encourage the reader to select from the menu of options when offered, benefitting from international perspectives.