Head and Neck Lymphedema After Cancer Treatment

Head and neck lymphedema is swelling caused by lymph fluid building up between the skin and muscle after cancer treatment. In people treated for head and neck cancer, it can show up in the face, the neck, or under the chin. It can also form where no one can see it, inside the throat. That hidden version matters, because it can affect swallowing, speech, and voice. The swelling is treatable, and therapy works better when it starts early.

The lymph system is a network of vessels and nodes that drains fluid from the tissues. Cancer and its treatment can break that drainage in three ways, according to NCI. A tumor can block the flow of lymph fluid. Surgery can disrupt how lymph moves, above all when lymph nodes are removed. And radiation therapy causes scar tissue that blocks the flow of lymph fluid.

Head and neck cancer care often involves both node surgery and radiation to the same region. That is why swelling can follow. Other things raise the risk further: infection, slow healing, earlier surgery or radiation in the area, advanced cancer, and being overweight. Lymphedema cannot always be prevented. But the risk can be reduced, and it can be managed once it appears.

If you are unsure whether swelling is lymphedema or ordinary fluid retention, our page on edema versus lymphedema explains the difference.

The visible form is swelling and a tight, uncomfortable feeling in the face, neck, or under the chin. Some people notice it first in the mirror, or when a collar fits differently.

NCI also describes an internal form. Lymphedema can develop inside the body, such as in the throat, where it is not visible. Because there is nothing to see, the clues are in how things work. Symptoms NCI lists for head and neck lymphedema include:

• Aching, tingling, pain, or numbness in the face, head, neck, shoulders, or ears
• Difficulty speaking, eating, swallowing, or breathing
• Voice, vision, or hearing changes

These symptoms have other possible causes after treatment. That is exactly why they are worth reporting rather than guessing about. Sudden or severe trouble breathing is always an emergency.

Your team may diagnose lymphedema from an exam, or use tests. NCI's list includes ultrasound, CT, and MRI scans. It also names lymphoscintigraphy, a scan that tracks lymph flow, and bioimpedance spectroscopy, which measures fluid in tissue.

Staging describes how settled the swelling is. At stage 0, lymph is not moving as it should, but swelling may not be obvious yet. Stage I swelling dents when pressed and improves when the area is raised. Stage II is firmer, and raising the area no longer helps. Stage III skin is extremely swollen, hard, and thick. The staging explains a theme in lymphedema care: earlier is easier.

Treatment is usually run by a certified lymphedema therapist. The tools NCI lists are mostly hands-on:

• Manual lymphatic drainage, also called lymphatic drainage massage, is a gentle massage that helps move lymph fluid toward areas that still drain well.
• Complete decongestive therapy combines that massage with compression, exercise, and skin care in one managed program.
• Compression garments or bandaging apply steady pressure. For the head and neck, fit matters. This is fitted by the therapist, not bought off a shelf.
• Exercise helps because muscle movement acts as a natural pump for the lymph system.

For advanced cases, NCI lists surgery, such as lymphovenous bypass and lymph node transfer. Those are for times when standard therapy is not enough. Our page on lymphedema rehabilitation beyond compression covers what a full program can include.

NCI's self-care advice adapts well to the head and neck. Protect the skin to prevent infection, and treat small cuts or shaving nicks with care. Avoid extreme heat and sun on the treated area. Keep to a healthy weight, stay hydrated, and go easy on salt. Avoid pressure on the swollen area, which can mean rethinking tight collars or straps. Your therapist can teach you simple lymph drainage moves to use at home, and which exercises help.

One complication needs special respect. Cellulitis is a bacterial infection of the skin, and NCI warns it can be life-threatening. It is a common complication of lymphedema. Skin stretched thin by swelling lets bacteria in more easily. Pain, redness, warmth, or fever in or near the swollen area needs immediate medical attention, not a wait-and-see approach. Knowing that one rule is a large part of living safely with lymphedema.

• Lymphedema (PDQ), Patient Version — National Cancer Institute
• Lymphedema — MedlinePlus