The second edition of this book, originally published in 1981, is the result of a collaborative effort of pathologists from 6 countries. It is more extensive than the first edition. Renal adenomas have been represented in more detail. Several new entities unrecognized in 1981 have been discussed including metanephric adenoma, chromophobe carcinoma, and renal medullary carcinoma. More extensive definition and discussion of nephroblastic lesions is given including mesoblastic nephroma and cystic nephroma. Two new entities are included: clear cell carcinoma and rhabdoid tumor. A list of miscellaneous tumours such as small cell carcinoma, ossifying renal tumour, renal hamartoma, and nephrogenic adenofibroma is also added.