Bilateral frontal cysts from a crista galli meningioma.

A 73-year-old woman had progressive apathy, forgetfulness, and gait disturbance for 6 months. Neurologic examination showed inattentiveness, memory impairment, and broad-based gait. Noncontrast MRI was performed due to gadolinium allergy. MRI and contrast-enhanced CT scan revealed symmetric bilateral frontal cysts (figure 1A) and an anterior skull base nodule (figure 1, B and C). Surgery confirmed a meningioma arising from the crista galli (figure 2A). Her symptoms improved postoperatively and the cysts shrank significantly (figure 2B). Figure 1 Symmetric bilateral frontal cysts and a tumor on MRI and CT