Mouth cancer

Also called Oral cancer or Oral cavity cancer

Mouth cancer can develop on the tongue, inside of the cheeks, roof or floor of the mouth, lips or gums. Common signs are mouth ulcers that do not heal, and red or white patches. Smoking, chewing tobacco, drinking alcohol and HPV infection increase the risk.

Last updated Nov 9, 2026

What it is

Found early, it can often be cured. Dentists can spot early signs at check-ups.

Treatment may include surgery, radiotherapy and chemotherapy, and can affect eating and speaking, so rehabilitation is often needed.

Common signs

  • A mouth ulcer that does not heal within 3 weeks
  • A red or white patch in the mouth
  • A lump in the mouth or neck
  • Pain when swallowing
  • Loose teeth for no clear reason

How it is usually diagnosed

  • Examination of the mouth
  • Biopsy
  • CT, MRI or PET-CT scans

Records worth keeping

Keeping these together makes each appointment easier, especially when you see a new doctor:

  • Biopsy reports
  • Scan reports
  • Head and neck team letters
  • Speech and swallowing therapy notes

Questions to ask your doctor

  • What stage is the cancer?
  • How will treatment affect eating and speaking?
  • What support is there to stop smoking or drinking?

When to get help right away

Call 112 or go to the nearest emergency department if you have:

  • Difficulty breathing, or bleeding from the mouth that will not stop: call 112

This page is general information. It is not a diagnosis and does not replace a doctor who knows your history. Medfold keeps your records organised; it does not interpret them.

Sources