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.
When breast cancer spreads to the spine, it's known as bone metastasis. And unfortunately yes, breast cancer that has spread to the bones may spread to other areas such as the brain as well. This happens when cancer cells break away from the primary tumor and travel through the circulatory system. The most common areas for breast cancer to spread are the bones, lung, liver, and brain.
Prostate cancer most commonly spreads to the bones and lymph nodes. It can also spread to, or press on, the tube that carries urine through the penis (the urethra), the bladder, the tubes that carry urine from the kidneys to the bladder (ureters) and part of the bowel (rectum). More rarely, prostate cancer may spread to other parts of the body including the lungs and liver.