Squamous cell carcinoma is the most likely diagnosis esp. if you are a smoker. Have you had your CT scan and biopsy yet? Excision and radiation can be curative. Best wishes!
I've only smoked for a couple of years, I'm not a smoker, most likely it's not cancer. The pain is bad though and the general consensus is if something like that doesn't heal within 14 days you should get it checked out. By the color of it, it is most likely not a cancer. As I'm looking into it, it seems less likely than it did in the start. I'm also finding out that different foods have different effects on the pain.
If I eat nearly any spicy food the pain subsides for a couple of hours.
The most painful food is nutella. It's not easy to tell but I think I'm getting better. The lump seems smaller I've had it longer than I can recall. While this is very unlikely to be a cancer this has been all in all a positive experience. Now I now that oral cancer is a very common one. Every single hour a person dies because of it. And what to do about it. If the pain subsides before the 26th, and I hope it will I'll see my dentist on February or March. Other than that trained professionals are pretty good at guessing which is which but I don't have that kind of knowledge.
One surprising detail that I've found is that HPV 17, could be the primary cause of that cancer so oral sex may increase your chances of getting oral cancer 6-fold. I have to say I'm guilty of it but I don't think she had any disease, so it's probably not that. Smoking is also a big factor. Something else that may be of interest is that throat cells (cells in the esophagus) are very good at killing cancer via programmed cell death (autophagy). There are evolutionary traits that help certain parts of humans be more resistant to cancer either by the autophagy just mentioned or if we think about our skin as having a shield for harmful radiation (although this is fighting a cause and not a cancer) and the inside of the mouth seems to be an ideal spot for the body to put on a fight.
Then again there is this bit of text (which I picked since my problem is at the very side of the tongue which is more like tissue from the esophagus rather then the one found on the tongue) :
Cancers of the esophagogastric region are highly malignant tumors with five-year survival rates of less than 16%.1 Research has shown that 88% of patients, selected for curative resection for esophagogastric cancer, already have disseminated tumor cells,2 that can remain dormant for variable periods, before emerging as aggressive, drug-resistant metastases.3 Improved systemic therapeutic options are therefore required to effectively eliminate primary and recurrent esophageal cancer.
http://myweb.sabanciuniv.edu/dgozuacik/selected-publications/files/2009/01/2004-oncogene-review3.pdf (pretty old document on autophagy (2004) I love autophagy, like our cells have a protocol for cannibalizing themselves.