man having back pain. urinary system and stones, cancer, world kidney day, chronic kidney stomach, liver pain and pancreas concept

abdomen ache back backache body cancer chronic cirrhosis cystitis digestive disease dyspepsia fibrosis gallbladder gastroenterology health healthcare hepatitis hydronephrosis illness infection injury kidney liver lower man medical medicine nephroptosis organ pain pancreas pancreatitis problem pyelonephritis sick sickness side sore steatohepatitis stomach stones stress symptoms system tract treatment urinary urolithiasis urology