Definitions for "Retroperitoneal"
applied to organs located behind the peritoneum on the posterior wall of the abdominal cavity, i.e. the retrositus.
the area of the body where the kidneys are located
Behind the peritoneum. The kidneys and adrenal glands are not actually in the peritoneal cavity, but retroperitoneal.
Keywords:  abdomen, spine, exposure, directly
exposure of the spine directly through the abdomen