Mayo Clinic. The bonds various chapters. he forged then have never been loosened. Certainly, treatment in the area is rapidly changing Subsequently, his duties as head of the department and advancing, but this book does not risk obsoles­ of pathology at the Institut Curie directed him finally cence since treatment is not its focus. The extent and towards tumour pathology. At the Institute, he was not nature of the author's experience explain the essentially satisfied with routine examinations but very soon linked anatomo-pathological orientation taken by this semi­ up with the research team and worked especially on nal book. It also provides valuable clinical information Ewing's sarcoma and the problems of ultrastructure, and a good radiological study.