This is the long awaited second edition of this volume in the WHO international histological classification of tumours series. With the exception of Dr Sobin, only two of the participants in the second edition were involved in the preparation of the first and, inevitably, this reviewer turned to the first edition to compare it with the second. The second edition is now in a much more user friendly paperback format and the material has been reorganised in a more logical and simpler way than in the first edition. Furthermore, the index is now at the end of the book rather than halfway through as it was …