Final answer:
The perirenal space, a retroperitoneal compartment surrounding the kidneys, typically contains more fat than other retroperitoneal compartments.
Step-by-step explanation:
The perirenal space is a retroperitoneal compartment that surrounds the kidneys. It contains a greater amount of fat compared to other retroperitoneal compartments. The fat in the perirenal space, also known as the perirenal fat capsule, serves as a protective cushion for the kidneys.
The kidneys are located in the retroperitoneal space between the parietal peritoneum and the posterior abdominal wall. They are surrounded by muscle, fat, and ribs. The perirenal fat capsule helps to hold the kidneys in place and protect them from external forces.
In contrast to the perirenal space, other retroperitoneal compartments, such as the pararenal space and the anterior pararenal space, have less fat. These compartments contain structures like the adrenal glands, blood vessels, and lymph nodes.