Could benign tumors grow and become serious later on in life?

Terminology issues: The term malignant is used to describe a tumor known to spread to ; damage tissues ; organs to the point death is possible. Benign tumors are less worrisome.They tend not to spread, but someone may have many individual ones.Their location ; growth may produce problems for the patient.Transformation to a malignancy in unheard of for some benign lesions and rare for others.