The oral cavity is a site where tissues can be exposed to different diseases. Some of these diseases can present unique clinical features. These features help the clinician to determine diagnoses and treatment with reliance.A patient may require an oral exam and pathology evaluation under the following conditions:

•  When a lesion is present in the tongue, gums, roof of the mouth, floor of the mouth, lips, neck, and face.

•  If there are changes in color: sometimes lesions may have different colors red, white, yellow, pigmented.

•  If there are changes in size: some lesions may change with time. Increase, decrease in size or simply it may remain stable.

•  If there are symptoms: lesions may be painful.