1 Arthritis: Two forms of arthritis that may affect the spine are osteoarthritis and rheumatoid arthritis.  Heredity: If the spinal canal is too small at birth, symptoms of spinal stenosis may show up in a relatively young person. Structural deformities of the involved vertebrae can cause narrowing of the spinal canal.
Ductal carcinoma in situ (DCIS) is the most common type of non-invasive breast cancer. DCIS is called non-invasive because it hasnât spread beyond the milk duct into any normal surrounding breast tissue. DCIS isnât life-threatening, but having DCIS can increase the risk of developing an invasive breast cancer later on.
When you have had DCIS, you are at higher risk for the cancer coming back or for developing a new breast cancer than a person who has never had breast cancer before. Most recurrences happen within the 5 to 10 years after initial diagnosis. The chances of a recurrence are under 30%.