A man in his mid-40s presents to the emergency department (ED) for evaluation of palpitations and a 2-day history of left flank pain associated with urinary frequency. The patient has no known medical ...

Nutcracker syndrome is a rare condition that happens when the vein that drains your left kidney gets squeezed between big blood vessels in your belly. It can be very painful, but it's usually not ...

Obstructive uropathy is a blockage that prevents urine from flowing naturally through the urinary system. The blockage may cause significant pain, nausea, and difficulty urinating. Several factors can ...

What is kidney cancer? Kidney cancer is a disease where cancer cells begin to develop abnormally in the kidneys. As cancer cells grow rapidly, they can form a tumor, and ...

That dull ache in your lower stomach that moves to your back is not unusual. Doctors explain why this happens and when it could signal a serious problem.

Pain under the left rib cage can be a sign of a heart attack, which is a medical emergency. An enlarged or ruptured spleen, which may result from trauma, can cause sharp pain. Kidney infections can ...