The newly updated version provides freshly updated encyclopedic coverage that the diagnostician needs to have at hand. With extensive changes in understanding and nomenclature for many diseases in recent years, this revised edition is critical and timely. Every chapter has been updated to provide the latest necessary information on scientific advances. In particular, chapters on lymphoma and gastrointestinal stromal tumors have been strongly revamped. Because it is now the most commonplace method for performing Pap testing, a completely new chapter on liquid-based cytology has been added, complete with scores of new high-quality images.