What is an undilated left ventricle with mild septal bulge in heart and cause of please?

Not to worry. An undilated left ventricle is a normal sized left ventricle - that's good! "mild septal bulge" is a bit ambiguous. I read echoes for a living and i'm not certain what is meant by this. If wall thickness is otherwise normal, ejection fraction is normal and there's no hx of heart attack, i'd regard it as a normal variant. If it is systolic bulge, it could indicate previous damage. See my comment.

Related Questions

What is small antero septal ischemia vs. Attenutaion? Does it mean a heart attack? What is a left ventricle hypertrophy?

Lvh. Sounds like you had a nuclear stress with a small anterior perfusion defect )not uncommon especially in people with more breast tissue). Cardiologist should clarify whenever possible & many newer nuke cameras are capable of attenuation correction which aids in caricaturing. Image interpretation is highly subjective. Lvh is hypertrophy of the left ventricle. Seek further evaluation antreatment. Read more...
Many questions. Check with your doc asap ischemia means clogged arteries. Heart attack means closed arteries! lvh usually means high blood pressure for many years. Check with your doc asap. Read more...