In general, meningiomas are benign lesions. While I have not seen your husband's scans, meningiomas can cause seizures. If they are large and are causing symptoms, most neurosurgeons would recommend removing it. For the smaller lesions, surgery, radiation, and observation are all options. The decision for choosing is complex and in general take into account history (i.e. symptoms or demonstration of meningioma progession over time), size, location of the meningioma, and they patient''s preferences. While it is a distressing period, perhaps getting another opinion can help you get more information.