Is unfolding if aorta serious? fatal or can be treated? someone close to me has the x-ray showing everythg else ok but unfolding of aorta ...

Not generally: Unfolding of the aorta is a finding on chest x-ray, typically appearing in older patients, which generally does not produce symptoms or require any treatment or intervention.

Aorta: Unfolding of aorta is a common finding in chest x-ray of elderly individuals seen as senescent changes. It is benign and due to aorta losing some of the elasticity as aging process . Unfolding as such is benign unless associated with aneurysm.