The revised Fourth Edition of this highly acclaimed reference is a practical, state-of-the-art, superbly illustrated guide to the evaluation and clinical correlates of prostate biopsy findings. This edition features expanded coverage of mimickers of prostate cancer, a new chapter on immunohistochemistry and molecular techniques, a major update to the Gleason grading system, new information on histologic changes following radiation therapy, and an expanded section on tumors of specialized prostatic stroma. The book contains nearly 300 full-color illustrations. A companion online image bank provides over 1,800 full-color images of specimens at various magnifications, plus a question-and-answer review of prostate pathology.