This fact-packed volume dealing with pediatric oncology is welcome partly because of its general excellence, but also because its soberly positive approach is somewhat overdue. Overdue partly because too few physicians are well acquainted with progress in oncology and especially because both the concepts of chemotherapy of tumor and of total or multidisciplinary care of cancer are peculiarly the products of pediatric genius. Jealous and parochial assumed prerogatives of surgeons, radiotherapists, and recently chemotherapists, tend too often still to obscure the fact that optimal treatment of cancer is, from the first, a team effort. For instance, among the 35 expert contributors to this volume, there are only two pathologists who should be, from first to last, members of the team. Hopefully, pathologists have not abrogated their responsibilities as might appear, for instance, in the chapter on so complex and vexing a subject as histiocytosis. There is no representative of social