question: Hi,My mother had her radical nephrectomy done 2 years back to remove one of her kidney.She was advised for USG-Abdomen and X-Ray Chest every year to check if there is any re-occurence of the tumor.This year,while.the USG showed everything normal,the X-Ray Chest says \"Bilateral Hilar Bronchovascular Prominence\" is observed.Rest lungs fields is clear and every thing else is clear/normal.Should I be worried,for a re-occurence ? Should I go for any further test for conclusion?Or could this be a normal thing ?