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The Duodenocolic Relationships: Normal and Pathologic Anatomy
The precise anatomic relationships between the duodenal loop and the transverse colon are often of critical importance in the radiologic interpretation of upper abdominal pathology. Their points of most intimate relationship represent anatomic crossroads between intra-peritoneal and extraperitoneal structures and thus permit specific localization and diagnosis of a disease process.1 Because of this relationship, a lesion originating in one may exert its major effects on the other. Particularly if radiologic investigation is initiated by a study that manifests the striking secondary effects, the presentation of findings may then be very misleading until the nature of the relationship and the primary site are appreciated.
Detailed knowledge of the intimate anatomic relationships is essential in the radiologic interpretation of a variety of diseases. These include defects of the meso-colon with internal herniation into the lesser sac, masses developing within the mesocolic leaves, extension of neoplasms, duodenocolic fistulas, gallbladder disease, renal masses, pancreatitis, and abdominal aneurysm.
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This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.