Hi. I have a 4 year old daughter and she has renal reflux in one kidney (had it in both kidneys but right kidney reflux went away). The renal reflux is a grade 3. Ever since she was 6 months old, we've been told she has a kidney stone in her right kidney and yesterday she went to her pediatric urologist, and he says now he believes what they thought was a kidney stone is a renal lesion or as he put it, a piece of fat or fatty tissue and on May 1st, she is having a MRI to determine that's what it is. My question to you is, is there any worry this might be cancer or anything? She has had this since 6 mo of age, everything I've read cancer isn't mentioned but of course anytime I hear lesion I go straight to the thought of cancer and it scares me to death. Her dr says he's seen this before and it is usually nothing. Would you agree? What are your thoughts on this?