The retroperitoneal and pelvic lymph nodes

The diagram shows an outline of the body from the chest to the top of the legs. It shows two kidneys, one on each side of the body, at the top of the tummy, just below the chest area. On top of each kidney is an adrenal gland. Two tubes come out from the inner side of the kidneys and go down behind the bladder. The bladder is in the pelvic area at the bottom of the illustration. There are two major blood vessels, a major vein and a major artery which are go down the centre of the body between the kidneys. Just above the bladder, they branch into two and continue down each side of the bladder, towards the groin. There are lymph nodes surrounding the blood vessels - these are the retroperitoneal and pelvic lymph nodes.