Since the publication of the previous edition of Tumors of the Esophagus and Stomach, great advances in many areas of tumor biology have led to a better understanding of the pathogenesis, pathology, and molecular biology of epithelial and stromal malignancies of the upper gastrointestinal tract. Many of these advances have led to specific improvements in diagnosis, prognosis, treatment, and thus, survival in patients affected by these tumors. This edition of the Fascicle was written to highlight these advances, and more specifically, to help pathologists diagnose diseases more accurately and understand how pathology contributes to clinical treatment in the new age of personalized and targeted therapy. Notable advances described in this publication include: 1) expansion of our understanding of the pathologic features and molecular pathogenesis of carcinomas of the esophagus and stomach, most of which develop through a chronic inflammation-metaplasia-dysplasia-carcinoma sequence. Important refinements in the classification of neoplastic precursor lesions have been made since the last AFIP series, including the morphologic and endoscopic subtypes, and this has led to improvements in surgical treatment with a strong trend toward minimization in the form of endoscopic mucosal and submucosal dissections 2) discovery of new diseases, such as gastric adenocarcinoma and proximal polyposis syndrome (GAPPS), a special variant of familial adenomatous polyposis, and significant advances in our knowledge regarding the molecular characterization of genetic polyposis syndromes 3) great expansion in the molecular-pathology correlation, morphologic diversity, classification, and therapeutic options of gastrointestinal stromal tumors (GISTs) 4) reclassification and refinement of prognostic factors related to neuroendocrine tumors 5) improvements in the role of cytology in the diagnosis of tumors of the upper gastrointestinal tract. This book has been written with the pathologist in mind first by using tables that illustrate salient pathologic, molecular, and differential diagnostic features of key entities that are often difficult to distinguish from each other. Specific color photographs of classic tumors and morphologic variants often difficult to recognize are used throughout.

Covering all aspects of gastrointestinal pathology, this award-winning volume in the Diagnostic Pathology series is an excellent point-of-care resource for pathologists at all levels of experience and training-both as a quick reference and as an efficient review to improve knowledge and skills. This updated third edition is an easy-to-use, one-stop reference for the entire GI system, offering a templated, highly formatted design; concise, bulleted text; and superior color images throughout, enabling you to arrive at the correct diagnosis and prepare actionable, useful reports. Provides comprehensive coverage with the necessary tools to make a comprehensive diagnostic workup Incorporates significant changes in the AJCC cancer staging of gastrointestinal tumors Provides details on PD-L1 (immune checkpoint inhibitor) therapy, new types of colitis, and molecular biology of GI tract tumors as it relates to precision medicine and targeted therapy Discusses timely topics such as GAPP, a newly described form of gastric polyposis that leads to cancer; the increasing complexity of large B-cell lymphomas and which immunostains and molecular tests to order for proper classification and therapy; Immune Modulator therapy effect, which can closely mimic IBD; and newly described polyposis syndromes, such as mixed and serrated polyposis Features more than 2,500 annotated images throughout, including gross pathology, a wide range of stains, and detailed medical illustrations, depicting virtually any GI specimen you're likely to see 2015 BMA Medical Book Awards 1st Prize Award Winner in Pathology Category (previous edition) Enhanced eBook version included with purchase, which allows you to access all of the text, figures, and references from the book on a variety of devices