What can cause pain below rib cage?

There's so much--: -B low the rib cage U have a whole book written on each organ. Needs a little more specificity. A few things that R B low Rlisted. Kidneys, liver, spleen, stomach, small bowel, aorta, vena cava, colon.....list of just 1 of these has many possible causes. B more clear on where the pain is. Just under, R or L & describe the pain. Cramping, after meals, ...