The adipose capsule attaches the kidneys to the retroperitoneum. It is also known as the perinephric fat or perineal fat.
the abdominal walls
There is one set of organs that is located behind or outside of the peritoneum but still within the abdominal cavity - these are the kidneys. They are said to be located in the retroperitoneum.
The Renal artery attaches to the Kidneys.
Retro
The kidney is located behind the abdominal cavity in the retroperitoneum.
The retroperitoneum.
It depends some mollusks may or may not have kidneys. Usually they have 2 kidneys.
Oligohydramnios usually associated with absence of both kidneys
The kidneys are located in the peritoneal cavity. Infection of this cavity is called peritonitis, and can be deadly. Dialysis can be done by instilling dianeal solution into the peritoneal cavity, and allowing the semipermiable membranes surronding the kidneys, and other organs to "clean themselves." This process is called peritoneal dialysis.
Unremarkable means there was nothing unusual about them.
The size of kidneys don't usually decrease in size over time.
Three kidneys are relatively uncommon. It usually is only discovered by accident as it rarely causes symptoms. It usually means that one of the kidneys were split into two prior to birth. It can be associated with infections and kidney stones, but usually causes no symptoms at all.