This book offers the most current information and reliable guidance on immunohistochemical diagnoses in surgical pathology and cytopathology. The book is organized in a consistent format of organ systems, specifically designed to target diagnostic dilemmas in surgical pathology. Each chapter features an introduction and a systematic approach to the diagnostic entities of that organ system. Readers will also find easy-to-understand diagnostic algorithms and 'immunohistograms' that depict immunostaining patterns of tumors, as well as charts, tables, and high-quality color histologic images that assist in making a diagnosis.