About spinal chordoma
What is spinal chordoma?
Chordomas are very rare primary bone tumors that can arise at almost any point along the axis of the spine from the base of the skull to the sacrum and coccyx (tailbone). The incidence of chordoma in the general U.S. population is about 8 per 10,000,000 people. They occur somewhat more often in males than females and, for unknown reasons, are rare in African Americans. Under the microscope, chordoma cells appear to be benign, but because of their location, invasive nature, and recurrence rate, the tumors are considered to be malignant. They arise from cellular remnants of the primitive notochord, which is present in the early embryo. In normal mammalian development, the notochord and substances produced by it are involved in forming the tissues that give rise to vertebrae. Normally, the tissues derived from the notochord disappear after the vertebral bodies have begun forming. However, in a small percentage of people, some tissues from the notochord do not disappear. Rarely, these leftover tissues give rise to chordomas.
About one-third of chordomas are found in the region around the clivus. The clivus is a bone in the base of the skull. It is located in front of the brainstem and behind the back of the throat (nasopharynx). Chordomas occur with equal frequency in the skull base, the vertebrae and the sacrococcygeal area towards the bottom of the spine.
Symptoms of the presence of chordomas vary with their location and size. Most chordomas occur randomly among the population (sporadic). However, some people develop this tumor as a result of a mutation inherited as an autosomal dominant trait.
What are the symptoms for spinal chordoma?
Numbness in the hands or feet symptom was found in the spinal chordoma condition
Back Pain is a common early symptom of spinal tumors. Pain may also spread beyond your back to your hips, legs, feet or arms and may worsen over time — even with treatment.
Spinal tumors progress at different rates depending on the type of tumor.
What are the causes for spinal chordoma?
Spinal anatomy Open pop-up dialog box Close Spinal anatomy Spinal anatomy
The spinal anatomy of a typical adult
The spinal cord is housed within a hollow chamber within the vertebrae (spinal canal). It extends from the base of the skull to the lower back.
It's not clear why most spinal tumors develop. Experts suspect that defective genes play a role. But it's usually not known whether such genetic defects are inherited or simply develop over time. They might be caused by something in the environment, such as exposure to certain chemicals. In some cases, however, spinal cord tumors are linked to known inherited syndromes, such as neurofibromatosis 2 and von Hippel-Lindau disease.
What are the treatments for spinal chordoma?
Ideally, the goal of spinal tumor treatment is to eliminate the tumor completely, but this goal may be complicated by the risk of permanent damage to the spinal cord and surrounding nerves. Doctors also must take into account your age and overall health. The type of tumor and whether it arises from the structures of the spine or spinal canal or has spread to your spine from elsewhere in your body also must be considered in determining a treatment plan.
Using microsurgical techniques, a tumor is gently teased out of the spinal cord in the cervical spine.
Treatment options for most spinal tumors include:
Monitoring. Some spinal tumors may be discovered before they cause symptoms — often when you're being evaluated for another condition. If small tumors aren't growing or pressing on surrounding tissues, watching them carefully may be all that's needed.
During observation, your doctor will likely recommend periodic CT or MRI scans at an appropriate interval to monitor the tumor.
Surgery.This is often the treatment of choice for tumors that can be removed with an acceptable risk of spinal cord or nerve injury damage.
Newer techniques and instruments allow neurosurgeons to reach tumors that were once considered inaccessible. The high-powered microscopes used in microsurgery make it easier to distinguish tumor from healthy tissue.
Doctors also can monitor the function of the spinal cord and other important nerves during surgery, thus minimizing the chance of injuring them. In some instances, very high-frequency sound waves might be used during surgery to break up tumors and remove the fragments.
But even with the latest technological advances in surgery, not all tumors can be totally removed. When the tumor can't be removed completely, surgery may be followed by radiation therapy or chemotherapy or both.
Recovery from spinal surgery may take weeks or longer, depending on the procedure. You may experience a temporary loss of sensation or other complications, including bleeding and damage to nerve tissue.
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Radiation therapy. This may be used to eliminate the remnants of tumors that remain after surgery, to treat inoperable tumors or to treat those tumors where surgery is too risky.
Medications may help ease some of the side effects of radiation, such as nausea and vomiting.
Sometimes, your radiation therapy regimen may be adjusted to help minimize the amount of healthy tissue that's damaged and to make the treatment more effective. Modifications may range from simply changing the dosage of radiation to using sophisticated techniques such as 3-D conformal radiation therapy.
Chemotherapy. A standard treatment for many types of cancer, chemotherapy uses medications to destroy cancer cells or stop them from growing. Your doctor can determine whether chemotherapy might be beneficial for you, either alone or in combination with radiation therapy.
Side effects may include fatigue, nausea, vomiting, increased risk of infection and hair loss.
Other drugs. Because surgery and radiation therapy as well as tumors themselves can cause inflammation inside the spinal cord, doctors sometimes prescribe corticosteroids to reduce the swelling, either after surgery or during radiation treatments.
Although corticosteroids reduce inflammation, they are usually used only for short periods to avoid serious side effects such as muscle weakness, osteoporosis, high blood pressure, diabetes and an increased susceptibility to infection.
What are the risk factors for spinal chordoma?
There are some risk factors for spinal chordoma:
- You're more likely to get a spinal chordoma if you have multiple family members with the condition or if you have certain genetic changes.
- If you've had radiation treatment to your head or neck for another reason, you may be at higher risk than others.
- Family history of cancer. If you have a family history of cancer and you're diagnosed with spinal chordoma, it's important to talk to your healthcare provider about whether or not your risk has increased as well.
- You're more likely to get spinal chordoma if you're over 50 years old.
- Men are more likely than women to get spinal chordoma.
- Caucasians are more likely than Asian or Hispanic/Latino people to develop this type of tumor.