NCCN Guidelines for Patients
Kidney Cancer, Version 1.2017
Kidney cancer basics
How does kidney cancer start?
Where does kidney cancer start?
Almost all kidney cancers are carcinomas.
Carcinomas are cancers that start in cells that
line the inner or outer surfaces of the body. In the
kidneys, carcinomas most often start in the cells that
line the renal tubules. This is called RCC (
arcinoma) and it is the focus of this patient book.
About 90 out of 100 kidney cancers are RCCs.
. Because it is the most common type,
RCC is often simply referred to as kidney cancer.
There are three other, less common types of cancer
that start in the kidneys. However, they do not act the
same as RCC and are not treated the same as RCC.
The less common types of kidney cancer are:
TCC starts in the cells that line the renal pelvis.
Wilms tumor almost only occurs in young children.
Renal sarcoma starts in the blood vessels or
connective tissue of the kidneys. (For information
about sarcomas, read
NCCN Guidelines for Patients:Soft Tiss
, available atwww.nccn.org/ patients .
Common types of kidney cancer
RCC is the most common type of
kidney cancer. About 90 out of 100
kidney cancers are RCCs. TCC
accounts for about 5 to 10 out of
100 kidney cancers. Renal sarcoma
accounts for less than 1 out of 100.
Wilms tumor is very rare and almost
only occurs in young children.
Types of kidney cancer
Illustration Copyright © 2017 National Comprehensive Cancer Network