The impetus for this book came from the recent appearance of single specialty books pertaining to reoperative surgery on various organs in the pelvis, as well as from the recognition that several different disciplines are involved with the challenges of reoperative pelvic surgery. Surgeons often encounter challenging dilemmas involving organ systems that have historically been attended to by surgeonsrepresentingcloselyrelatedbut distinctspecialtyareas. Withincreasing sophisticationand knowledge about management of anatomically adjacent organs by the specialties of gynecologic oncology, gynecology, urology, and colon and rectal surgery, as well as the emergence of specialty training programs in urogynecology and pelvic floor disorders, we thought it appropriate and timely to create a textbook acknowledging this increasing knowledge and interspecialty collaboration. To this end,where appropriate, we haveincluded collaborative authors fromeach of the specialties, any ofwhommaybecalledupontoaddressaparticularanatomicarea. Itseemsinevitablethatsituations willariseinwhichthecollaborativeexpertiseofseveralseparatespecialtiesmayconvergetoprovide surgeons the benefit of the combined thought processes that would prove invaluable when such difficult problems are encountered. With this in mind, the editors, from the fields of gynecologic oncology, urology, and colon and rectal surgery, identified experts in theirown fields who could bestcontribute to the management of specific problem areas. For example, since reoperations for endometriosis may involve uterus, adnexae, ovaries, or the colorectum, the chapter concerning this condition has been coauthored by specialists in colorectal surgery and gynecologic oncology. We have been fortunate to find experts who have collaborated to bring available evidence-based medicine, best demonstrated practices, and personal experience to their contributions.