It depends on the type of tumor. Some non-malignant tumors can be formed of cells that can eventually become malignant and some non-malignant tumors will never become malignant. Biopsies are used to determine the risks of malignancy.
Happens all the time, every day, to thousands of people.
Of course they can but can take years.
thats why the take them out ,to insure that they don,t
Yes, it may or may not.
Unfortunately they can.