NCCN Guidelines for Patients
Breast Cancer - Carcinoma in Situ
, Version 1.2016
Figure 2.1 Mammogram
Mammograms are pictures of the insides of your
breasts. They are often easy to get. Before the
test, don’t use deodorants, perfumes, powders,
or lotions on your breasts and armpits or wash
them off. These products can make the pictures
unclear. You will also need to remove your top
In the exam room, a technician will tell you how
to place your body next to the machine. Your
breast will be placed onto a flat surface, called
a plate. A second plate will be lowered onto
your breast to flatten it. This may be painful but
it gets the least fuzzy picture of your breast.
Pictures will be taken from a camera that is
attached to the two plates. Mammograms of
both breasts take about 20 minutes to complete.
The pictures are either printed on film or saved
on a computer. An expert in mammograms,
called a radiologist, will view the pictures. He or
she will report the test findings to your doctor.
Bilateral diagnostic mammogram
A mammogram is a picture of the insides of your
breast. The pictures are made using x-rays.
Mammograms that are used for breast cancer
screening are often made from two x-rays of
each breast. A computer combines the x-rays to
make detailed pictures.
See Figure 2.1
Many women with LCIS have had a bilateral
diagnostic mammogram. If you haven’t had this test,
it is advised. A bilateral mammogram is a picture of
each breast. Diagnostic mammograms are made
with more x-rays from different angles than screening
mammograms. By using more x-rays, the picture is
clearer and can better show if there is more than one
Diagram showing a woman having a mammogram by Cancer Research UK available atcommons.wikimedia.org/wiki/File:
showing_a_woman_having_a_mammogram_CRUK_089.svg under a Creative Commons Attribution-Share Alike 4.0 International