NCCN Guidelines for Patients
Waldenström’s Macroglobulinemia, Version 1.2017
Testing for WM
A CT of the chest, abdomen, and pelvis is the most
common imaging test for WM.
See Figure 3
. A PET
scan or MRI may only be done in certain situations.
For example, if Bing-Neel syndrome is suspected
you may have an MRI of the brain and spinal cord.
This syndrome is rare and affects the central nervous
system. It is caused by WM.
See Guide 3
You will be asked to do certain things before your
imaging test. You may need to stop drinking or eating
for several hours before certain tests. For an MRI,
you will be asked to remove any metal objects (like
jewelry) on your body. Let the doctor know if you
have any metal objects implanted in your body (for
example, artificial joints, stents, or pacemakers) as
this may also interfere with the MRI.
You will be asked to lie down on a table for an
ultrasound, MRI, CT, or PET. A PET and CT may
be done together. This is called a PET/CT (
This allows your doctors to view the shape and
function of organs and tissues.
Tell the doctor if you are allergic to the dye. The dye
is called contrast. Let the doctor know if you have
any concerns about the machine being used. Ask
questions about the test so you can be prepared.
Keep in mind, you will have to wait for the results.
The pictures made during imaging tests need to be
reviewed by a radiologist.
A radiologist is a doctor
who’s an expert in reading imaging tests.
she will provide your doctors with a report on what
the tests show.
It may take several days to get this
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.