New What Organ Is In The Lower Left Back Background. The left kidney, small intestine and descending colon are all found at the lower left side of the back, also known as the left lumbar region. If you go just above the kidney, you have the adrenal gland, the spleen.
We call the calf the back of the lower leg.
It consists of two chambers, left each chamber is further divided into upper and lower compartments, which communicate with each by valves. These are really deep internally. Kidney, colon or small intestine are the only possible organs in the area. Accompanying symptoms and the location of the pain can help a doctor diagnose the cause.