Suggest Treatment For Renal Parenchyma, Reduced Cortical Thickness And Increased Echogenecity

My Father got the Sonography Report as Kidneys: " Renal Parenchyma, Cortex shows reduced thickness & diffusely altered increased echogencity suggest chronic medical renal parenchymal disease"What Further Treatment should i give to my father and how to cure from it. Also my father have Hypertension disease of heart as local Doctor Says Go for Angiography is it necessary. Shivkumar Mahajan Latur India YYYY@YYYY