This revised Fourth Edition volume in the Biopsy Interpretation Series is a practical, superbly illustrated guide to the evaluation and clinical correlates of prostate biopsy findings. This updated reference offers an original approach and expanded coverage of mimickers of prostate cancer, novel data on the use of immunohistochemistry and a new chapter on molecular techniques, a major update to the Gleason grading system, discussion of new entities, and an expanded section on mesenchymal tumors of the prostate.