The retroperitoneum is the part of the abdominal cavity that lies between the posterior parietal peritoneum and anterior to the transversalis fascia. It is divided into three spaces by the perirenal fascia and is best visualised using CT or MRI.
Drawing of the anatomy of the retroperitoneal spaces at the level of the kidneys. The anterior pararenal space (APRS) is located between the parietal peritoneum (PP) and the anterior renal fascia (ARF) and contains the pancreas (Pan), the ascending colon (AC), and the descending colon (DC). The posterior pararenal space (PPRS) is located between the posterior renal fascia (PRF) and the transversalis fascia (TF). The perirenal space (PRS) is located between the anterior renal fascia and the…
Pneumoretroperitoneum is by definition presence of gas within the retroperitoneal space. It is always abnormal and has a relatively small differential: perforated retroperitoneal hollow viscus duodenum peptic ulcer disease blunt or penetrati.
The retroperitoneal space (retroperitoneum) is the anatomical space (sometimes a potential space) in the abdominal cavity behind (retro) the peritoneum. Description from imgarcade.com. I searched for this on bing.com/images