This is called a "cervical rib" because of its attachment to C-7 (the seventh cervical vertebra), and its surgical removal is almost always recommended. The symptoms of TOS can first appear in the early teen years as a child is becoming more athletic. Treatment
Evidence for the treatment of thoracic outlet syndrome as of 2014 is poor. Physical measures
Stretching, occupational and physical therapy are common non-invasive approaches used in the treatment of TOS. The goal of stretching is to relieve compression in the thoracic cavity, reduce blood vessel and nerve impingement, and realign the bones, muscles, ligaments, or tendons that are causing the problem. One commonly prescribed set of stretches includes moving the shoulders anteriorly (forward – called "hunching"), then back to a neutral position, then extending them posteriorly (backward, called "arching"), then back to neutral, followed by lifting the shoulders up as high as possible, and then back down to neutral, repeated in cycles as tolerated. Another set of stretches involves tilting and extending the neck opposite to the side of the injury while keeping the injured arm down or wrapped around the back. Occupational or Physical therapy can include passive or active range of motion exercises, working up to weighted or restricted sets (as tolerated).TOS is rapidly aggravated by poor posture. Active breathing exercises and ergonomic desk setup and motion practices can help maintain active posture. Often the muscles in the back become weak due to prolonged (years of) "hunching" and other poor postures.Ice can be used to decrease inflammation of sore or injured muscles.
When a new pregnancy is diagnosed it is important to monitor the pregnancy by transvaginal sonography to assure that is it properly located, and that the surgically repaired area remains intact. Cesarean delivery is recommended to avoid uterine rupture during labor. Epidemiology
Interstitial pregnancies account for 2–4% of all tubal pregnancies, or for  1 in 2,500 to 5,000 live births. About one in fifty women with an interstitial pregnancy dies. Patients with an interstitial pregnancies have  a seven-times higher  mortality than those with ectopics in general. With the growing use of assisted reproductive technologies, the incidence of interstitial pregnancy is rising. References
External links

The Ectopic Pregnancy Trust - Information and support for those who have had the condition by a medically overseen and moderated UK based charity, recognised by the National Health Service (UK) Department of Health (UK) and Royal College of Obstetricians and Gynaecologists