The majority of mouth and throat cancers can be avoided by stopping smoking and drinking excess alcohol.
Throat cancer actually covers a bigger area around your mouth than just your throat.

A = Nasopharynx
B = Uvula
C = Hypopharynx
D =
Larynx
E = Tongue
F = Oropharynx
Throat cancer involves any cancer in:
See the above picture and using logic:
Throat cancer symptoms show up in problems with your hearing, smell, taste, speech or swallowing and could be any of the following:
In short: symptoms of a cold are similar. The difference is that a cold goes away after a few days. The throat cancer symptoms stay!
Advanced throat cancer symptoms could be:
When your gut tells you that 'something is wrong' with your throat, go and see your doctor.
First your doctor will have a look in your mouth and throat. Then he will feel your mouth and throat for any lumps or swellings. Most likely you will be asked to have a blood test and asked what your family history is.
When something is suspicious or your doctor cannot help you further, you go and see an otorhinolaryngologist: a specialist in diseases of the head and neck.
Since it is relatively easy to take a tissue sample from the throat area, a biopsy will be done.
If no cancer is found, you could be happy although you still don't have an answer why you are having your symptoms...
If a throat cancer is found, then doctors will perform more tests to determine if and how far the cancer has spread. These viewings could be done by :
When father first was diagnosed with metastatic liver cancer I stumbled upon a group of people sharing their throat cancer stories telling me that their cancer was very different from father's cancer. Looking at the symptoms and diagnostic methods above, I can assure a "belly cancer" is very different from a "mouth cancer".
Always consult your doctors and read more about throat cancer symptoms!