The studies have varied as to the frequency adenomas transform to
malignantCancer
Gestational trophoblastic disease
Lymphoma, malignant - ct scan
Malignant melanoma
Malignant otitis externa
Melanoma of the eye
Multiple myeloma
Skin cancer, malignant melanoma cancer. This ranges from 8 to 13 percent.
Surgical resection is normally indicated, but it sounds like due to the location of the adenoma, this may be a difficult procedure in your case.
Sometimes angiography is used to help with diagnosis, but this is more rarely indicated, especially since you have had a pretty comprehensive evaluation.
I cannot comment on treatment options without reviewing the case. Repeating the MRI periodically should be done at minimum. As for a surgical procedure, another opinion at a major academic medical center should be considered.
These options can be discussed with your personal physician.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Kevin, M.D.
kevinmd_