Can women die from ovarian cyst?

Yes, unlikely: A cyst that has contents that will cause severe inflammation (peritonitis), a cyst that twists, cuts off its blood supply and causes gangrene, and a cyst that ruptures and causes interrnal hemorrhage could possibly cause death. All are not likely scenarios. Most ovarian cysts resolve without any treatment. Oftentimes, they not even known by the woman to be present before they resolve.