<s>[INST] Hello my brother is 30 and he beat and got both his thyroids out due to thyroid cancer and now he after 6 yrs for the last 3 months has severe headaches that r 24hrs a day and very severe nose bleeds he finally had a MRI done and all we know right now is it showed some abnormalities on his brain and spots and they used the word texture on his as well he has numbness in legs and on his head he has passed out from this vomiting could this possibily be a brain tumor and cause he had thyroid cancer and had it removed could this be causing all his head issues [/INST] I am assuming that your brother is on Tab thyroxine (replacement hormone for thyroid) ever since the surgery, and that he has been following up regularly with his treating doctor. Also, after removal of thyroid cancer, it is routine to get thyroid scans done to ensure that there is no cancer remaining in the body. Since you have not mentioned any such thing, probably it has not been done. If no scans have been done, then it is possible that your brother is suffering from a recurrence of his cancer which I would say is good news since it can be treated with medicines. So, I suggest you get a thyroid scan done on your brother. If it shows disease in the brain, then that explains everything and the cancer can be ablated with tablets (radio iodine). If the scan is normal, then it is unlikely to be related to the thyroid cancer, and you need to consult a neurologist. </s>