Kidney woes...again...:(

Its been ten years since I had my pelvic-ureteral junction obstruction operated upon, and more than five years since I last got a "DTPS test" done..and now seems like the old problem is surfacing again..heard that some kind of fibrosis sets in often after a PUJ obstruction surgery, which may result in a secondary obstruction , or the formation of stone, etc. In either case, it may lead to urinary tract infection and may damage the kidney (already distended by as much as 10mm)...:((