Percentage of gallstones that are radio opaque: (A) 10%, (B) 20%, (C) 30%, (D) 40%
Answer is A. Most (upto 90%)of gall stones are radio lucent Upto 10% of gallstones are radio opaque Ref: Bailey and love 27th edition Pgno : 1121 Most(upto 90%) kidney stones are radio opaque