Is there many vegans that get coronary atherosclerosis?

There can be: There are multiple risk factors for atherosclerosis: hypertension, high cholesterol, diabetes, smoking, family history of heart disease or stroke, getting older, being a man. Being a vegan may help with dietary concerns that influence cholesterol levels, but it does not negate heriditary risk.

Yes, many...: Atherosclerosis is an accumulation of white blood cells in artery walls, there to remove low density lipoprotein (fat carrying protein) particles. Cholesterol, about 30% of the fat molecules in all animal cell membranes, are manufactured by every animal cell, a cellular survival issue. Plants do not make cholesterol. Cholesterol is promoted as a way to estimate lipoproteins; but was never correct.