Here's a very brief summary of what I've learned regarding this cancer and treatment:
Kidney cancer usually strikes people at 50+ with high risk factors such as smoking, illegal drug use, and family history. Karin has none of the risk factors. She really should not have this disease at all.
Karin's cancer exists in three 'forms':
- Tumors - in her kidney and lower back / pelvis. These tumors are putting pressure on nerves in her lower back, causing pain.
- Bloodstream - this is how it spread from the kidney
- Bone surface - cancer in the blood is sometimes drawn into the bone surface that the bloodstream flows through. It grows there, and like roots into the sidewalk it chips away at the bone. This is the source of pain in her shoulder and tailbone - pain like a broken bone because it really is broken. (Note: this is not 'bone cancer', that is cancer of the inside bone marrow).
- Tumors can be removed by surgery. When a tumor is localized inside something like a kidney, this allows total removal of the tumor. In 1% of patients with Kidney cancer that has spread, removing the Kidney results in 'spontaneous remission' - their immune system suddenly recognizes the cancer cells as disease and kills them off.
- Tumors outside organs cannot be removed cleanly by surgery. Radiation treatment is more effective at destroying these with minimal damage to normal cells. Radiation (high energy x-rays) are especially damaging to cells that are in the process of replicating. Cell replication is a process that takes about one day. Normal cells replicate rarely. Cancer cells replicate too often. A small daily dose of x-rays fired into the tumors kills tumor cells each day. Most of the tumor cells can be killed in this way, and the dead tumor gradually fades away over several weeks.
- Cancer rooting into the Bone surface can be treated very effectively by radiation. Once the cancer there is killed, the bone heals.
- Cancer in the bloodstream is the most difficult to treat, because it is thousands of individual cells floating around looking for a place to dock and grow. The typical treatment is chemotherapy. Chemo attacks normal cells nearly as harshly as cancer cells, so makes a person very sick, but can kill most cancers in the blood.
- However, Kidney cancer is one of the toughest cancers around. Chemo is not effective on Kidney cancer.
- Until a couple years ago, there was only one treatment option for Kidney cancer in the bloodstream, and it worked for only a fairly small number of people.
- In the past 3 years, several new treatments have become available for Kidney cancer. These new treatments do not directly kill the cancer cells, instead, they disrupt the cancer from being able to emit signals used to establish and grow new tumors. This is able to control the growth of new tumors by daily treatment (via a pill), though not actually ridding the body of the cancer. In some people, long term treatment gradually cleans the bloodstream as circulating cells die trying to develop tumors. Side-effects of treatment are typically mild because there is little impact on normal cells.
- This treatment is still very new and requires close monitoring.
- There are treatments under development which will have the ability to deliver targeted attacks to the cancer cells that will more directly kill them off.
Metastasized Kidney cancer is rare, less than 1% of all cancer patients. And these treatments have not been around for long. These two factors together limit the direct experience that most Oncologists have had with these new treatments. These new treatments are very specialized and require active monitoring and adjustment. Therefore, it is important to work with an Oncologist that has a lot of direct experience working with these new Kidney cancer therapies and alternative therapies in recent years. Fortunately, we live in an area with a lot of medical specialists. I have found the name of someone who specializes in this type of cancer and will be calling him on Monday.