Patient: MRI showed a mass in the anterior skull base, size 59X58X40MM, clear border, TIWI equal low signal, FLAIR slightly high signal, DWI slightly high signal, upward compression of brain parenchyma and visual cross. The three ventricles and the anterior horn of the bilateral ventricles show uniform enhancement of the mass after enhancement, and the meningeal tail sign is visible. The patient’s symptoms are as follows: 1. complete loss of sense of smell 2. severe loss of vision in both eyes, now he can only see a few fingers in front of him 3. poor memory, confused thinking, focal dementia, sometimes clear and sometimes confused, able to eat and go to the toilet on his own, but not quite able to do other things on his own. The patient’s physical condition is not good, he has broken his bones 3 times, he still can’t walk easily (he can’t walk for a long time and has a limp), he has diabetes, and he has lost all his teeth. We went to many big hospitals and the doctors said that surgery is the first choice, but since the tumor is very big, it is also very risky and the family has to make their own decision. We don’t want to risk losing our loved ones so we decided not to have surgery, I would like to ask, if not surgery there are other treatment options? We just want to make the tumor a little smaller, at least to relieve her symptoms, and then take herbs or something to make it grow slower or not grow. I read on the internet that gamma knife can be used if there is a risk of surgery or if the patient does not want to take the risk, I wonder if there will be any side effects from using gamma knife. Nanjing Brain Hospital neurosurgery Zou Yuanjie: 1, typical olfactory meningioma is a benign tumor, surgery is strongly recommended. 2, not suitable for gamma knife treatment. 3, the current microscopic neurosurgery technology can strive to achieve total tumor removal and cure. 4.Please choose a neurosurgeon from a tertiary care hospital for treatment.