In 1999, Dr. Richard DeMay decided to buck the trend of large print references with this portable, practical reference. Since then, 'Practical Principals of Cytopathology' has served surgical pathologists as a ready reference easily carried to a colleague's office. The newly updated version continues to provide encyclopedic coverage of material that the diagnostician needs to have at hand and brings the comprehensive coverage completely up to date. With extensive changes in understanding and nomenclature for many diseases in recent years, this new edition is critical and timely. Every chapter has been completely updated to provide the latest information on scientific advances. In particular, chapters on lymphoma and gastrointestinal stromal tumors have been revamped to incorporate the latest intelligence in these areas. Because it is now the most commonplace method for performing Pap testing, a completely new chapter has been added on liquid- based Pap testing, complete with scores ofnew quality images to support the information.