Please Tell In Detail What Is Meant By Left Kidney

please tell in detail what is meant by left kidney small in size and echotexure. borders are smoothe. no cyst or mass or hydronephrosis. no hydroureter. no perinephric calcification.
please tell me in detail is this type of disease is under treatable ? and how much is it serirous toward kidney failure. i am very worry about it thanksss.....