Question: Can the results of an angiogram be wrong? I had one done on september 18, 2014. During the angiogram itself the Phyician/Technician commented that the Left anterior descending artery was 100% blocked, but in the reports he noted that the LAD gave off a diagonal that supplies a large territory. The diagonal had an ostial 90% stenosis and biforcates more distally, with one or two branches with an ostial 70% stenosis. The LAD itself is occluded after the diagonal.
The LM ostium was engaged in the normal anatomical location The left main had an ostial 50-60% stenosis with a 30% distal stenosis before bifurcating into the LAD and circumflex artery. The LCX had luminal irregularites and an obtuse marginal with a 70-80% ostial stenosis. The RCA is dominant and has multiple luminal irregularities and a focal 50% lesion in its mid section. Its acute marginal branches gives off collaterals to the mid and distal left anterior descending. The RCA gives off the PDA and small PLB, the PDA gives off collaterals to me mid and distal left anterior descending as well. Based on the results above, a triple bypass was ADVISED.
Could the actual angiogram be wrong in the amount of blockage reported and, if correct, would a bypass be the correct option?

I understand that, based on the report the doctor gave, the course of action would be a bypass. However, I guess my main question was if it is possible that the doctor interpreted what he saw for blocked arteries and therefore he may be wrong. Is it possible that the arteries are not as blocked as he says?