Periaortic

Around the aorta.

The aorta is the great artery that comes from the left ventricle of the heart and delivers oxygen-rich blood to the body.

Peri- is a prefix borrowed from the Greek.

It means 'around or about.' So perianal is around the anus.

For example; pericardial is around the heart, perinatal is around birth, and periumbilical is around the umbilicus (the belly button).

Peri- is a useful prefix in anatomy, much employed in medicine.

Pericardial fluid is fluid around the heart.

Periaortic lymph nodes are lymph nodes around the aorta