The anterior pararenal compartment is the most common site of extraperitoneal infection. Of 160 patients with extraperitoneal abscess reviewed by Altemeier and Alexander,3 the process was confined to the anterior pararenal space in 84 (52.5%). Most arise from primary lesions of the alimentary tract, especially the colon, ex-traperitoneal appendix, pancreas, and duodenum. The exudates originate from perforating malignancies, inflammatory conditions, penetrating peptic ulcers, and accidental or iatrogenic trauma.3,67 Hemorrhage from a ruptured abdominal aortic aneurysm is rarely localized to this space (Fig. 8-44). I have also recognized localization to this compartment in hemorrhage from the bare area of the spleen, the hepatic and splenic arteries, and in some cases of spontaneous extraperitoneal bleeding.
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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.