This book provides a systematie applieation of anatomie and dynamie prineiples to the praetieal understanding and diagnosis of intraabdominal diseases. Anatomie sections and injeetion studies form a basis for understanding the eharaeteristie features of many eommon and uncommon diseases and their spread and loealization in the abdomen. These relationships and speeifie eriteria provide a rational system for accurate radiologie analysis in plain films, eonventional eontrast studies, ultrasonography, and computerized transaxial tomography (CTT). This informa tion leads to the uncovering of clinieally deeeptive diseases, the evaluation of the effeets of disease, the antieipation of eompliea tions, and the determination of the appropriate diagnostie and therapeutie approaches. The introductory atlas presents full color anatomie cross seetions of the abdomen and pelvis, eomplemented by labeled traeings, and detailed CTT seans at eorresponding levels. The seetions, whieh are approximately 3. 8 em (1. 5 in.) thiek, were obtained from fresh eadavers frozen in dry iee for 48 hours, in order to maintain the true intimate anatomie relationships. The aeeompanying text of the atlas stresses normal gross rela tionships, eommon variants, and the basis of their radiologie identifieation, partieularly in plain films. The subsequent ehap ters deal with the diagnosis and the pathways of spread of infeetion, malignaneies, and traumatie and inflammatory effu sions within the intra- and extraperitoneal spaees. Emphasis is plaeed on the specifie loealizing features based on the anatomie planes and reeesses and the dynamies of extension of disease.