What is the cause of pain in the lumbar region of the abdomen?

Q: Apart from stone in the kidney area, what may be the reason for pain the lumbar region of the abdomen. The ultrasound report shows nothing wrong. However, I pass a lot of gas.

A:The more common causes of pain in the lumbar region, excluding urinary stones, are: Right: gallstones, peptic ulcer, colitis, other colonic diseases, pancreatic disease, rarely appendicitis Left: peptic ulcer, colitis, other colonic disease, pancreatic disease