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17

NCCN Guidelines for Patients

®

:

Kidney Cancer, Version 1.2017

2

Testing

Imaging tests

All the x-ray pictures are combined to make one

detailed picture of the body part. This type of scan is

very good at showing kidney tumors.

A CT scan of your belly area (abdomen) and pelvis

is recommended to check if there is a tumor in either

of your kidneys. The pictures can clearly show the

tumor size, shape, and location. This test can also

show if the tumor has grown into nearby tissues.

Before the CT scan, you may be given a contrast dye

to make the pictures clearer. The dye may be put in

a glass of water for you to drink, or it may be injected

into your vein. It may cause you to feel flushed or

get hives. Rarely, serious allergic reactions occur.

Tell your doctors if you have had bad reactions in the

past. The contrast dye might not be used if you have

a serious allergy or if your kidneys aren’t working

very well.

A CT scan machine is large and has a tunnel in the

middle. See

Figure 7

. During the scan, you will

need to lie face up on a table that moves through the

tunnel. The scanner will rotate an x-ray beam around

you to take pictures from many angles. You may hear

buzzing, clicking, or whirring sounds during this time.

One x-ray scan is completed in about 30 seconds.

But, the full exam may take 15 to 60 minutes

to complete. More or less time may be needed

depending on the part of your body being scanned.

A computer will combine all the x-ray pictures into

one detailed picture. You may not learn of the results

for a few days since a radiologist needs to see the

pictures. A radiologist is a doctor who’s an expert in

reading the pictures from imaging tests.

Figure 7

CT scan machine

A CT machine is large and has a tunnel in the

middle. During the test, you will lie on a table

that moves slowly through the tunnel.