Boy Born With 3 Kidneys He Is Now 11 Yrs

boy born with 3 kidneys he is now 11 yrs old found out 2 yrs ago extra kidney just disaperd but tubes that went to it is still there how does a kidney just disaper and why and lately he has some issues one kidney is slightly swelled and recently when he pee it burns so bad he yells and cry went to dr no infections also sick to stomach dizziness