Fig. 8-112. Extensive spread of pancreatic fluid to retromesenteric and retrorenal spaces, with caudal extent.

(a) At the level of the pancreatic head (P), fluid is present within the left colonic compartment (white arrows), surrounding the descending colon (DC), and in the left retro-mesenteric plane (black arrowheads), left retrorenal space (black-and-white arrowheads), right colonic compartment (black-and-white arrow), right retromesenteric plane (white arrowheads), and retropancreaticoduodenal fusion fascia (black arrows). Fluid is also located ventrally in the transverse me-socolon (asterisk).

(b) Bilateral extension of the retrorenal spaces (arrowheads) through a well-defined defect (arrows) at the posteromedial boundary of the posterior pararenal (PP) space, the lumbar triangle pathway. There is no extension in the flank tissues. Although the right and left retromesenteric planes have acquired large amounts of fluid (F), little fluid is present within the right (white asterisk) and left (black asterisk) colonic compartments, medial to the ascending (AC) and descending colon (DC), respectively.

(c) Distal extension of fluid (arrows) lateral to the inferior epigastric vessels (arrowheads) and ventral to the external iliac vessels (asterisks).

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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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