Hi. I'm sorry about the cancer with your husband and you will be in my prayers.
I had a kidney removed in 2007 and told there was a good chance there would be no return. It was diagnosed as clear cell renal cell carcinoma. I was monitored with CT scans regularily for the past two years and nothing was showing. However on May 30 of this year my humerus bone (upper arm) broke while lifting a small bag of mulch and it was diagnosed that I had a return of the RCC in the bone. My oncologist then diagnosed it as Stage IV RCC.
I have just started a regimine of 4 weeks on and 2 weeks off on a relatively new drug (according to all I have read) - Sutent. They say the side effects are not pretty but I have been lucky so far and have not experienced too bad side effects.
What all this means (at least according to my doctors) is that the RCC is a vascular disease - meaning that it travels through the blood stream and can go anywhere in the body but most of the information I have read is that it usually ends up in the lungs, brain, or bone (mine).
The Sutent reacts in two ways - proliferation & angiogenisis. Proliferation slows the growth of cells. Since almost all chemo has no ability to slectively attack cells, it will also slow the growth of normal cells so infection of any kind is important to avoid. Angiogenisis on the other hand takes away the source of nutrition of the tumor - won't let a blood supply to the tumor start - thereby cuts off the growth of tumors.
The problem with RCC is that it is a cellular cancer (as most are) and therefore very difficult to detect at the cellular level since most detection is done through MRI, CT scans, bone scans, etc which can only detect lesions or tumors. This means that to know the cancer cells are present is next to impossible and thats the reason for the type of treatment your husband is probably on because with the medication constantly in the blood stream, it is constantly fighting the cancer cells.
I should tell you that I am certainly not a doctor but there is a lot of information out there but your best source of information is your doctor and if you are not sure you are getting the information you need, you might seek a second opinion from another doctor.
I hope this helps and may God be with you and your husband.