Just dx with a benign pericallossal lipoma. will it grow? can it be cause of cognitive decline, migraines, facial pain, vision decline?what to ask dr?

Get a second opinion: Lipomas, although benign, tend to grow. If yours is "peri-callosal' and you have the symptoms as described, the two are likely related and deserve at least follow-up. possibly treatment. If the first neurologist (I hope that the diagnosing doctor is a specialist), has not recommended treatment, see another. If he has and you trust him/her, you have a choice to make.

Pericallossal lipoma: Fifty percent of patients with intracranial lipomas are asymptomatic. Common presenting symptoms include epilepsy, headache, behavioral changes, and cranial nerve paralysis. However, the association between epileptic seizures and intracranial lipomas remains controversial . Change in size or growth can be determined radiologicaly. Would discuss your symptoms with your physician.