Transient Elastograghy to Detect Non Alcoholic Fatty Liver Disease in Renal Transplantation Recipients.

a. Primary (main): The presence of non alcoholic fatty liver disease in post renal transplantation recipients by non invasive methods as transient elastograghy b-Secondary (subsidiary): to evaluate if transient elastograghy could be used as a noninvasive tool as new perspective on the prediction, prevention of non alcoholic fatty liver disease in renal trasplantation recipients .