In the present case, the histological features of both intracranial and metastatic pulmonary meningioma were WHO grade I meningioma: they lacked atypical features, had a relatively low mitotic rate of less than 2 per 10 high-power fields, and the intracranial and pulmonary tumors had low Ki-67 labeling index values (5% and 2%, resp). This evidence concerns the gene MKI67 and lung meningioma.