Rectal Perforation

Since the rectum is subperitoneal and lies in the midline, gas that escapes from its lumen rises up both sides within the extraperitoneal tissues. Depending primarily on the exact site of perforation, the gas may predominate on one side, but bilateral spread remains evident. In my experience, spread has preferentially been to the posterior compartments. The gas may then parallel the lateral contour of the psoas muscles, outlining the suprarenal and subdiaphragmatic tissues (Figs. 8-211 and 8214).

Essentials of Human Physiology

Essentials of Human Physiology

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.

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