I Had Pheochromocytoma During My Pregnancy Six Years Ago. It

i had pheochromocytoma during my pregnancy six years ago. it was removed along with my right adrenal gland. it was tested and found to be begnin and not genetic related. i have not had my yearly test in three years. i have been having these weird eisodes with massive headaches but not as intense as before. my family doctor did an MRI of my brain and white matter was found on my frontal lobe. they tested again seven months later and found it got better but was still there. i am finalliy waiting to see my pheo suregon but in the meantime im wondering if the two are related? a few weeks ago i had more intense eisodes clustered within three four days. my docotor still isnt taking me seriously and im calling tomrorw to make sure the referall is sent to my surgeon but will take months to get in. can the white matter and pheo like symtoms be related? and how? thankyou so very much