What causes pain in the flank region?
Patient: I have dull flank pain, both sides of my back just under rib cage. Went to emergency room the other night and Urine sample and bloodwork turned out  good and xrays were clear.  made doctors appointment  and just trying to do some research ahead of visit. Doctor: Hi,This may be caused by tiny urinary / renal calculi.You need to get ultrasound abdomen done.Drink plenty of water and liquids.Thank you.