Breast Thermography- a responsible
second look
William Cockburn, D.C., D.A.B.F.E., F.I.A.C.T
thermodoc@verizon.net
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Breast cancer and other breast diseases have become a tremendous issue
in women's health today, particularly in advanced industrialized nations.
Also note that approximately 1,000 men get breast cancer yearly.
A procedure which has gone largely unnoticed is Breast Thermography, also
known as Breast Thermal Imaging. Breast thermography promises the opportunity
of earlier detection of breast disease than has been possible with breast
self examination, physician palpation, or mammography.
The medical community investigated breast thermography quite extensively
during the late 1970's and early 1980's. The FDA approved the procedure
as an adjunctive tool in breast cancer screening, and many physicians, concerned
about the radiation exposure of mammography, began to promote thermography
as a replacement for mammography. This was error.
Basics of Thermal Imaging
Thermography is a non invasive test. This means that it sends nothing
into your body. In fact, there is no contact with the body of any kind, no
radiation and the procedure is painless.
Utilizing very sophisticated infra-red cameras and desk top computers,
thermal imaging technicians simply capture a photograph of the breasts.
An infra-red photograph, or heat picture. The data is stored in a computer
and then can either be printed on high resolution color printers, or sent
electronically to a physician with a similar computer for analysis.
The physician, such as a radiologist or thermal imaging specialist, then
compares the heat patterns in the left breast to the right breast. Any difference
in heat, or any specific blood vessel patterns in one breast that do not appear
in another indicate a physiologic abnormality. This may be pathological (a
disease) or it might indicate an anatomical variant. When a thermogram is
positive, the job of differential diagnosis begins.
This is all that thermal imaging, or thermography provides. A physiologic
marker that some abnormality is present in the breast. Nothing more and
nothing less. This is however, an extremely valuable and important finding,
but it has historically been the interpretation of these findings that has
been the problem, and is now the subject of the "responsible second look"
Competition Paradox with Mammography
Scientists and health care researchers have been looking for many decades
at tools that can identify breast cancer reliably and quickly. It takes
years for a tumor to grow, and the earliest possible indication of abnormality
is needed to allow for the earliest possible treatment and intervention.
Thermography was viewed as a possible early diagnostic tool for cancer.
The reason I stated that this was error, is quite obvious, but almost totally
overlooked by the clinicians and researchers of the day.
Thermography is a test of PHYSIOLOGY. It does not look at anatomy or structure,
and it only reads the infra-red heat radiating from the surface of the body.
Mammography, on the other hand, is a test of ANATOMY. It looks at structure.
When a tumor has grown to a size that is large enough, and dense enough
to block an x-ray beam, it produces an image on the x-ray or mammographic
plate, that can be detected by a trained radiologist. A fine needle biopsy
is then generally performed to identify the type of tissue in the mass, to
determine if atypical or cancerous cells are present.
We now come to an important point. Neither thermography nor mammography
can diagnose breast cancer. They are both diagnostic tests which reveal
different aspects of the disease process and allow for further exploration.
The problem has been, that a number of studies were done on patients who
had an established diagnosis of breast cancer. These studies were done with
thermal imaging, wherein the patient having known breast cancer acted as their
own controls.
In other words, the patients cancerous breast was compared thermographically
to the patients healthy breast. In nearly every case the cancerous breasts
were hotter and had specific patterns of heat mimicking the appearance of
blood vessels that suggested 1) cancerous tumors were hotter than surrounding
tissue and 2) blood vessels in the vicinity of the tumor were engorged with
blood and this produced hotter thermal images than the normal vessels in the
opposite breast.
This made complete sense, until the research proceeded to look at younger,
and younger women.. It was at this time thermography was viewed as a failure.
In a local newspaper article in my home town paper covering my clinic, the
caption read "Thermal Imaging...Useful tool or dinosaur in breast cancer
detection".
Here is the problem. Early stage tumors have not grown large enough or
dense (thick) enough to be seen by current mammography. When the thermogram
picks up the heat from the tumor, a mammogram is performed and often the
mass is not detected.
The result of the thermogram is then considered a "False Positive". The
more patients of younger age screened with the so-called false positive,
the more suspicion was placed on thermography.
Eventually lobbying efforts at the AMA's House of Delegates and at Medicare,
brought about the removal of thermographic coverage by insurance companies,
and the demise of thermography in large measure. This is most unfortunate.
Thermography was viewed as a competitive tool to mammography, a role for
which it was never intended. This is a known fact in the community of board
certified clinical thermographers. Thermography is complimentary to mammography
and an adjunctive tool in the war on breast cancer. We must learn to accept
the information these tools bring to us, and use the information to the best
management of the patient. You and me.
The Correct Role for Thermal Imaging
This is where the correct utilization of thermographic imaging will demonstrate
it's ability. In the correct model, thermography of the human breast can make
a profound and positive impact on breast cancer and other breast disease.
Here's the correct model.
Thermography is a risk marker for breast patholog
y. This paper is written for the general public and I am not going to burden
the reader with a large base of complex studies that have been published
demonstrating the clinical utility and reliability of the procedure. Suffice
it to say it is overwhelming.
My purpose is to identify the role of thermography. It is actually quite
a simple one.
In performing this procedure, which is non-invasive and non-compressive,
we can establish a baseline in women as young as 18. Yearly thermographic
evaluations as part of a routine annual physical can be performed inexpensively
and quickly.
As soon a suspicious (positive) breast thermal examination is performed,
the appropriate follow-up diagnostic and clinical testing can be ordered.
This would include mammography and other imaging tests, clinical laboratory
procedures, nutritional and lifestyle evaluation and training in breast
self examination.
With this protocol, cancer will be detected at its earliest possible occurrence,
It has been estimated by a number of my colleagues that thermography is correct
8-10 years before mammography can detect a mass.
This is both exciting and frustrating for the clinician and the patient.
It is exciting as it gives us the opportunity to intervene long before cancer
can grab hold of the body. Cancer is opportunistic. We must find it, or the
suspicious signs of its' presence long before the intervention stage has passed.
On the other hand, it is frightening to uneducated clinicians and patients,
and poses quite a dilemma for those rooted in the "wait and see" attitude.
It is very difficult to sit in front of a patient and tell them that you
have a positive finding with a procedure that suggest the possibility of
a terrible disease, and then have no other tools available to confirm or
deny the tests correctness.
This is not thermography's failure. Indeed this is where the scientific
and research community has failed thermal imaging.
If one can grasp the simple concept that thermography is detecting the
fever of a breast pathology, whether it is cancer, fibrocystic disease,
an infection or a vascular disease, then one can plan accordingly. One can
lay out a careful clinical program to further diagnose and or MONITOR the
patient until other standard testing becomes positive, thus allowing for
the earliest possible treatment.
Two other positive benefits of breast thermal imaging have also been proposed
by the author at scientific symposia. As a non-invasive low cost procedure,
thermography can be made available to two distinct subpopulations:
1) Patients who are economically deprived and can not afford the cost
of mammography.
2) Patients who are afraid of mammography due to fear of x-ray or breast
compression, and thus do not get their recommended mammogram.
The Paradigm Shift
It is my position that the role of thermography is vastly different than
it originally was determined to be. We must begin to look at this tool for
what it really is. A highly accurate, high yield thermometer, much like the
one every physician uses daily to determine the presence of fever.
Numerous studies have been published in the United States, England and
France demonstrating that patients in the false positive thermographic group
I mentioned earlier, those patients with positive thermograms and negative
mammograms who were told the thermography was wrong, were determined by long
term follow-up to have developed breast cancer in exactly the location thermography
had demonstrated its positive finding 5-10 years earlier.
Thermography's only error is that it is too right ~ too early. It is our
job as scientists, physicians and concerned patients, to identify the appropriate
protocols once a thermogram is positive. It is in this capacity that the paradigm
must shift.
We have a wonderful and exciting opportunity to at last change the incidence
of this horrible disease, by screening younger women utilizing high resolution
thermal imaging technology and then placing those women with positive findings
into the appropriate lifestyle modification and treatment model which may
be able to prevent or minimize not only cancer, but all breast disease.
This is our task.
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