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Cancer.Net Podcast - Leg Swelling After Cancer Treatment, with Andrea Cheville, MD, and Jennifer Bradt, PT, DPT, CLT-LANA

Leg Swelling After Cancer Treatment, with Andrea Cheville, MD, and Jennifer Bradt, PT, DPT, CLT-LANA

Cancer.Net Podcast

06/11/19 • 25 min

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ASCO: You’re listening to a podcast from Cancer.Net. This cancer information website is produced by the American Society of Clinical Oncology, known as ASCO, the world’s leading professional organization for doctors who care for people with cancer.

The purpose of this podcast is to educate and to inform. This is not a substitute for professional medical care and is not intended for use in the diagnosis or treatment of individual conditions. Guests on this podcast express their own opinions, experience, and conclusions. The mention of any product, service, organization, activity, or therapy should not be construed as an ASCO endorsement. Cancer research discussed in this podcast is ongoing, so the data described here may change as research progresses.

In this podcast, we’ll discuss lymphedema, or swelling, in the legs after cancer treatment, including what can cause lymphedema, and how to prevent and manage it. This podcast will be led by Dr. Andrea Cheville, the Director of Cancer Rehabilitation and Lymphedema Services in the Department of Physical Medicine and Rehabilitation at Mayo Clinic in Rochester, Minnesota, and Jenny Bradt, a LANA-Certified Lymphedema Therapist and Clinical Lead Physical Therapist in the Department of Physical Medicine and Rehabilitation at Mayo Clinic.

ASCO would like to thank Dr. Cheville and Ms. Bradt for discussing this topic.

Dr. Cheville: Hi, I am Dr. Andrea Cheville, the director of Cancer Rehabilitation and Lymphedema Services at the Mayo Clinic in Rochester, Minnesota. And I am joined today by our lead lymphedema therapist, Jenny Bradt. Jenny, do you want to tell our listeners a little bit about your background?

Jenny Bradt: My name is Jenny Bradt, and I am the Clinical Lead Physical Therapist at the Lymphedema Clinic here at Mayo Clinic. I am a LANA certified therapist. We'll be talking about that a little bit later, and what I do in and out, every day, are treat patients with lymphedema.

Dr. Cheville: And I think it's worth noting that Jenny and I have been in this business for quite a while. I've been directing Lymphedema Services, largely for cancer patients, since 1999. I initially started my work at the University of Pennsylvania in Philadelphia. And, Jenny, has it been 30 years yet for you?

Jenny Bradt: Since 1995. That's a long time.

Dr. Cheville: No, not so long. Okay. Well, to start out with, we thought it might be useful to talk about what is lymphedema? And how does lymphedema differ from other kinds of swelling? And why does it happen frequently among patients with cancer? And it really comes down to a matter of plumbing. The cells of your body need oxygen and nutrients in order to survive. In fact, they don't last very long without both of those. And so the body transports very large volumes of oxygenated blood throughout the body. But once the blood has reached the tissue, it has to get back to the heart, which is not a mean feat. And in addition, all of the debris, the garbage that cells make—just like we make garbage, our cells make garbage—that also has to get out of the tissue.

And so, we have 2 sets of pipes to accomplish this task. We have our veins and the lymphatic vessels. And the veins principally carry fluid. Roughly 90 to 95 percent of the fluid that your heart pumps into any tissue is returned by the veins. And veins also will remove smaller molecules, and these proteins, fatty acids. But the big ones, and again, these are tiny by our perspective. Those are returned to the general circulation by the lymphatic system. So these are bits and pieces of dead cells, cells that die in our tissue, what we call long-chain fatty acids, large proteins, and bacteria.

And all of that solid waste material can build up outside of our cells, and it's the tiny, little lymphatic, what we call capillaries, that absorb those, and then through larger and larger lymphatic vessels, they eventually transport those. And actually, the lymphatic system pumps. It has muscle in the walls of the vessel, and it's remarkably efficient at moving this proteinaceous and other debris out of our tissue and to the lymph nodes. And the lymph nodes do 3 things. They regulate the viscosity of lymph, how thick it is. They remove debris that the body doesn't feel a need to recycle. And they identify harmful pathogens, and those are principally bacteria, because our skin is not a perfect barrier and bacteria get in through our skin all the time. And at the level of the lymph node that the immune system learns, "Hey, there's a problem." And that's assuming that there aren't just a few bacteria, but when we really have an infection. And it's a lymph node that the body mounts a response, which is why you may have palpated enlarged, tender lymph nodes in your neck, or in your armpit because those lymph nodes are busy fighting off an infection.

So for cancer, both for staging, to accurately stage our c...

06/11/19 • 25 min

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