with increased echogenicity and normal bladder suggests some obstruction above the bladder and below the kidney. Although increased renal cortical echogenicity in comparison to liver indicates impaired renal function,acute and chronic failure can't be labelled on the basis of ultrasonography
So I would suggest to get some basic investigations done like urine routine, microscopy, culture sensitivity, blood urea, serum creatinine
and electrolytes. Consult a nephrologist
as investigations like IVP and renal scintigraphy may be required to assess accurately the anatomical or functional abnormality in the kidney.