Is the nurse right to say that i had scoliosis, and that could cause breathing problems?

Possibly.: Scoliosis can cause significant breathing problems if the curvature is very high. Smaller curves may cause a reduction in respiratory function when measured, but usually not clinically observed. If you have scoliosis and breathing problems you need to be examined because one may not be causative of the other.

Yes.: Yes it can. A change in the geometry of the chest cavity can do that. Hope that helps!