Lip Cancer

Lip cancer is a growth of abnormal cells in the lip that can damage nearby tissue. It may begin in the outer skin of the lip or in the inner lining that forms part of the mouth. Lip cancer is one type of oral cancer, although not every mouth cancer starts in the lips. People with long-term sun exposure, tobacco use, weakened immunity, or other risk factors may have a higher likelihood of developing it, and early evaluation can improve treatment options.

Lip cancer develops when genetic changes cause cells in the lip to grow, divide, or survive abnormally. Squamous cell carcinoma is the most common form, while less common cancers can include melanoma and other tumor types. A melanoma on the lip begins in pigment-producing cells and may look different from a typical skin cancer on the lip. These abnormal changes can affect the outer skin or the inner lining of the lip.

Outer Lip Skin and Inner Oral Lining

Cancer on the outer lip is generally considered a skin cancer, while cancer that begins inside the lip is part of the broader group of oral or mouth cancers. The exact cause in one individual is often unknown. A risk factor, such as sun exposure or tobacco use, increases the chance of cancer but is not necessarily a direct cause.

Untreated or advanced lip cancer can damage local tissue and cause pain, bleeding, or changes in appearance. It may make eating, speaking, or moving the lips more difficult, and it can involve nearby lymph nodes. In more advanced cases, cancer may spread to other parts of the body.

Effects of Surgery, Radiation, and Systemic Therapy

Surgery may cause swelling, numbness, scarring, or changes in the shape and movement of the lip. Radiation can contribute to mouth soreness, dry mouth, dental problems, or difficulty swallowing, while chemotherapy, targeted therapy, and immunotherapy may cause fatigue and other body-wide effects. Reconstructive surgery, dental care, nutrition support, speech therapy, and rehabilitation may help manage these effects.

A clinician examines the lips, mouth, jaw, and neck and may feel for enlarged lymph nodes or other changes. A biopsy, in which a sample of abnormal tissue is removed and examined under a microscope, is needed to determine whether the tissue is cancer. Other tests help show how extensive the disease may be.

Stage reflects the size and location of the tumor, whether nearby lymph nodes are involved, and whether the cancer has spread to distant organs. The pathology report also provides information about the cancer type and features that help determine treatment. These findings are combined by the care team to guide the diagnosis and treatment plan.

Radiation and Systemic Treatments

Surgery is the main treatment for many localized lip cancers and involves removing the tumor with a margin of healthy tissue. Reconstruction may be needed to restore the lip’s shape, movement, or function. Radiation therapy, chemotherapy, targeted therapy, or immunotherapy may be used in selected cases, particularly when the disease is advanced, recurrent, or cannot be fully removed with surgery. A multidisciplinary team may combine treatments and provide supportive care for pain, nutrition, dental health, speech, swallowing, and appearance-related concerns.

These steps can lower risk but cannot prevent every case of lip cancer. Routine screening for lip cancer is not generally recommended for everyone. Regular dental and medical examinations can help identify suspicious changes, especially for people with increased risk of skin cancer on the lip or oral cancer.

Lip cancer is often treatable, particularly when it is found before it spreads. Prognosis varies according to the stage, tumor type and features, location, spread, response to treatment, and a person’s general health. An individual outlook cannot be determined from symptoms or appearance alone.

Factors That Influence Recovery

Recovery may be influenced by wound healing, the need for reconstruction, and changes in speech, eating, or lip movement. Some people need rehabilitation to address swallowing, speech, nutrition, or cosmetic effects. The treating oncology team is best positioned to discuss an individual’s outlook using the pathology and staging results.

Follow-up visits typically include an examination of the lips, mouth, neck, and treatment site. The schedule depends on the cancer’s stage, the treatment received, and the clinical team’s recommendations. Follow-up helps monitor healing, identify recurrence or a new cancer early, and address ongoing treatment effects.