Hello Not at all cancerous. You need to understand the anatomy and some physiological aspects to remove your worry.

Hi! First of all get this constant worry out of your head that you might be having cancer, this small dot looks totally benign (non-cancerous). If you don’t have any symptoms like pain in throat or difficulty in swallowing then kindly don’t look into your throat in the mirror daily as that will increase your worry more. Gazing at your throat once in a month is fine.