Kidney Cancer 101
What is mRCC?
mRCC usually begins as a mass of abnormal cells in the kidney that begins to grow out of control and forms a growth, or a primary tumor. These cells can be found in more than one part of the kidney. They can also be found in both kidneys at the same time.
As the primary tumor grows, here's what can happen:
- Cancer cells break away from the tumor and travel through the blood stream or lymph system
- The cells then form a new tumor in other parts of the body
- This spreading process is called metastasis. Your health care team may refer to this type of cancer as metastatic or stage IV kidney cancer
Even though the cancer can spread and form new metastatic tumors in other parts of the body, the cells come from the primary tumor that originated in the kidney. So it is still considered kidney cancer.
The genetic factor
Although doctors don't know exactly what causes kidney cancer, there are some risk factors associated with the disease. One of these risk factors is von Hippel-Lindau (VHL) syndrome. VHL is a rare condition caused by an abnormal gene. It can increase your risk of kidney cancer. Family members of someone with this syndrome can be tested to check for the VHL gene.
Metastatic Kidney Cancer Guide
This guide provides information about metastatic kidney cancer, practical tips to help you cope, and valuable support resources for you and your family.
Download the guide now

