Large bump on hard palate. dentists say mucocele. if it were cancer would it show on a ct scan of sinuses/face. been there 5 years. gotten bigger.

Hard palate mass: Need to see ENT for evaluation and biopsy. CT scan indicated with and without contrast. Mucocoeles do not occur there with any frequency

Bump: Palate is improbable place for a Mucocele. Please see a specialist Oral Surgeon or an Oral Medicine Specialist for evaluation, appropriate imaging, diagnosis, and appropriate treatment. 5 years is much too long to not have this lesion properly tended to.