One difference between cholesterol stones (left) and the stones on the right are that the ones on the right account for only 10% to 25% of cases of stones in the United States. What is the name of the stones on the right?

The provided question is incomplete since it lacks the options required to answer it, however the complete question is as follows:

a) Pixelated

b) Patterned

c) Pearl

d) Pigment

The correct answer is option D. pigment.

Explanation:

Cholesterol stones are the stones that make the pigments that are major components of gall bladder stones, as basic and primarily made up of the cholesterol.

The stones of this particular type form if the pigments present in the bile precipitate while these pigments are not conjugated. These stones are responsible for the 10 to 25 percentage of stone cases in the U.S.

Thus, the correct answer is - option D. pigment.