 The small posterior lateral branch has diffuse mild disease and then the vessel gives rise to a fairly large posterior ventricular branch, which has 70% ostial narrowing, and then after this the posterior descending has 80% narrowing at its origin.
The small posterior lateral branch has diffuse mild disease and then the vessel gives rise to a fairly large posterior ventricular branch , which has 70 % ostial narrowing , and then after this the posterior descending has 80 % narrowing at its origin .