What is a boy's stomachache?

Male patients show pain in the lower abdomen accompanied by weight in the lower back. The most common and most likely cause is bystander ureteral calculi, while bladder ureteral calculi cause lower abdominal pain, most common is that the lower end of the ureter enters the bladder opening, or we call it ureteral bladder wall stone incarceration. Generally speaking, the pain symptoms are severe, and can be accompanied by radiation pain in the lower back or perineum. The diagnosis is mainly confirmed by urinary system B ultrasound.