A teacher's assistant is not typically required to hold a Bachelor's Degree, so the average pay is much lower than that of the teacher in charge. A teacher's assistant averages about $21,000 yearly with a slight range between $19,300 and $27,400.
However, just because breast cancer has spread to the spine doesn't mean that it will spread to other areas. Doctors can treat the new tumors with radiation and new medications called bisphosphonates can block the progression of tumor cells in the bone and prevent the cancer from spreading to other organs.
Spread to the Brain. Lung cancer is the most common cancer that spreads to the brain, and at least 40 percent of people with advanced lung cancer will develop brain metastases sometime during their disease. Both non-small cell lung cancer and small cell lung cancer can spread to the brain.