What is tongue cancer?
There are two parts to your tongue, the oral tongue and the base of
the tongue. Cancer can develop in either part. The oral tongue is
the part you see when you 'poke your tongue out' at someone. This is
the front two thirds of your tongue. Cancers that develop in this
part of the tongue come under a group of cancers called mouth (oral)
cancer.
The base of the tongue is the back third of the tongue. This part is
very near your throat (pharynx). Cancers that develop in this part
are called oropharyngeal cancers (pronounced oar-o-farin-gee-al).
Types of tongue cancer
The most common type of tongue cancer is squamous cell carcinoma
(SCCA). Squamous cells are the flat, skin-like cells that cover the
lining of the mouth, nose, larynx,
thyroid and throat. Squamous cell
carcinoma is the name given to a cancer that starts in these cells.
Symptoms
The symptoms of tongue cancer may include
A red or white patch on the tongue, that will
not go away
A sore throat that does not go away
A sore spot on the tongue that does not go
away
Pain when swallowing
Numbness in the mouth that will not go
away
Unexplained bleeding from the tongue (that is,
not caused by biting your tongue or other injury)
Pain in the ear (rare)
Do bear in mind that these symptoms may
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tongue cancer 
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