From: Feasibility of recruitment to an oral dysplasia trial in the United Kingdom
  Inclusion criteria | Exclusion Criteria |
---|---|
Clinically evident leukoplakia | Histologically confirmed cancer |
Can attend for follow up | Prior oral cancer |
Requiring biopsy | Patients on aspirin, non − steroidal anti-inflammatory drugs or corticosteroids |
Over 18 years old | Current treatment of oral dysplasia involving topical or systemic treatment |
Able to give informed consent | Active peptic ulcer |
Not known to be pregnant | History of aspirin induced asthma, stomach ulcers or aspirin sensitivity |
 | History of associated angioedema or urticaria, or suspected oral allergic reactions in the past. |