question: Hi there,  I had an ultrasound scan as my GP thought that I had kidney stones. The radiologist told me that i had bilateral duplex kidneys. I experience pains around the kidney regions sporadically, and especially in the past few months. Calcium oxalate crystals were found in a urine sample hence why kidney stones were thought to be a possibility. Are the two conditions linked? What are the implications of bilateral duplex kidneys? Thanks, Jennifer