Conversation: The conversation between human and AI assistant.
[|Human|] hi doc i have query regarding an ulcer which i m having over two months now. somehow its going away. i m very tensed doc. i also did vitamin b12 test.which is is very low. for this i have been taking b12 injections this is 4th week now. doc i m scared if its mouth cancer.
[|AI|]  first there is no relation between it B12 deficiency and oral cancers. You might have had it B12 deficiency and oral ulcer co incidentally. Good that your oral ulcer is healing. If it doesn't heal or increasing in size you need to get it biopsied. But remember all oral ulcers are not cancers. We do biopsy to be on safer side. There are many causes of oral ulcers including the common authors ulcer to lichen plans