NCCN Guidelines for Patients
Hodgkin Lymphoma, Version 1.2015
While x-rays and contrast are used for CT, a sugar
radiotracer is used for PET. The radiotracer is often
). Before PET, you must
fast for 4 hours or more. There may be other limits to
your diet. About an hour before the scan, you will be
injected with the radiotracer.
The radiotracer emits a small amount of energy. The
energy is detected by the imaging machine. Cancer
appears brighter (“hotter”) in pictures because cancer
cells use sugar more quickly than normal cells. PET
hot spots can be caused by health problems other
than cancer. Thus, you may receive more tests if
results aren’t a match with Hodgkin lymphoma.
Cancer can spread to lymph nodes. If it does, lymph
nodes will grow larger over time. Doctors can see
lymph nodes on an x-ray and note if they look large.
Since Hodgkin lymphoma often spreads to lymph
nodes within the chest, a chest x-ray can be helpful. A
chest x-ray is advised if a large mass in the middle of
your chest is seen with other imaging tests.
Bone marrow biopsy
Cancer can spread into bone marrow. PET is one
of the tests used to assess for cancer in marrow.
PET results may clearly show that cancer is in bone
marrow. When PET shows cancer in three or more
areas of bone, it can be assumed that cancer is in the
Low numbers of blood cells may be a sign of cancer
in bone marrow. You may have low numbers despite
normal PET results. In this case, a biopsy of your
bone marrow can be useful. This biopsy will remove
a small piece of bone and some bone marrow likely
from your hip bone. You may receive a light sedative
before the test.
During this test, you will likely lie on your side as
Your doctor will clean your skin
then give local anesthesia to numb the site. Once
numb, a needle will be inserted through your skin and
pushed into the bone. The needle will be rotated to
remove the samples. This biopsy may cause pain and
can bruise your skin.
Bone marrow biopsy
Figure 2.2 Bone marrow biopsy
Doctors use a bone marrow biopsy to remove a sample of bone and marrow for testing.
Illustration Copyright © 2015 Nucleus Medical Media, All rights reserved.www.nucleusinc.com