Th condition has nothing to do with soft palque. The RCA is being pinched between ascending and pulmonary outflow tract narrowing (stenosis) the passage of blood to about 25%. I don't know the prognosis of the anomaly, but 25% passage of blood though the pinched vessel may not be a critical, but it can cause problems to watch out for.
It can happen as a stenosis creates turbulence at distal side of the stenosis that can form blood clots or cause plaque ruptures that result in strokes.
Oops, had to re-sign in and I got my post messed up...the right coronary artery is attached to the bottom "left" of my heart
A recent test said I had no hard nor soft plaque nor calcification. It's the anomolous right coronary artery that is pinched (to the 50-70%) between my aorta and pulmonary valve and attached to the bottom right side of my heart...
yes at some point the maximum is 25% which is classed as low. Anything above 70% is seen as a strong concern with blockages. I think this is because the risk of the plaque rupturing is much higher at this level because the pressure of the blood against it becomes greater.