It is sad that your mother is sick and not willing to see a doctor.
One should never miss a potentially treatable condition - she must be seen
and age may suggest bad things - but small things like a polyp should not be missed -
She has to see a doctor. It is our duty to convince her and show to a doctor. Don't we take a child, even if the child refuses?
Of course, even if doctors see, there are instances when they may not be able to help at times.
But it is better to convince her and convince ourselves that the best has been done and nothing curable is missed
Wishing her speedy recovery