Kidneys in abdomen. Coloured computed tomography (CT) scan of the human abdomen, showing kidneys and other internal organs. This is a horizontal slice through the subject, viewed from underneath. The subject's back is at the bottom of the picture. The organs shown include: kidneys (yellow ovals left and right); the liver (blue triangle at left); spleen (blue oval at right); pancreas (blue and purple region in centre); vena cava (left of two small blue circles in centre); aorta (right of two blue circles); intestine (dark blue, upper left); spinal vertebra (dark blue, lower centre); ribs (dark blue ovals around abdominal wall).