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. ..

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.
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.