"The stellate ganglion (plural: ganglia), also known as the cervicothoracic ganglion, is formed by the inferior cervical and first thoracic ganglia and is located just anterior to the head of the first rib. It receives input from the paravertebral sympathetic chain and provides sympathetic efferents to the upper limbs, head, neck and heart 1. It is present in 80% of people. 2"