<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hello Doctor , My sister aged 56 was suffering from urinal infection since last 2 years on and off.. She has been taking medicines for the same . Today her Nephroligist says her left kidney is totally dead non functional and has to be removed within 2-3 months .. My Queries : 1 How come all of a sudden we come to know of this , inspire of regularly visiting a renowned Neohroligist. 2 Can there be any chances of revival of the dead kidney ? 3 If not , then should it be removed when ? 4 what should we do ? Please guide us ? Awaiting an early reply , Thanks and Regards , Santosh Shah  <response>: Good Day, and thank you for being with Chat Doctor ! A non-functioning kidney can be due to chronic obstruction or chronic infection. non-functioning kidney cannot be revived anymore. If the non-functioning kidney is the cause of your recurrent UTI then it should be removed to prevent UTI and preservation of the remaining good kidney. I hope I have succeeded in providing the information you were looking for. Please feel free to write back to me for any further clarifications at: .comdoctors Chat Doctor. Best wishes 