question: i have been chewing Rajanigandha pan masaala for the last 16 years now i have minimized it to one packet per day from four to five. i am comcerned i have oral cancer because my chins are so tight when i open my mouth. it is not bulging enough when i blow up. i have been getting frequent sores on my tongue if i eat too spicy foods. i do not know to what speciality doctor to approach to get the diagnosis right.