[A case of atypical meningioma with Lhermitte-Duclos disease]

Lhermitte-Duclos disease is known as an uncommon disease that characterized by a slowly progressive tumor of the cerebellar hemisphere. We present a case of atypical meningioma with Lhermitte-Duclos disease. A 57-year-old female was admitted to our hospital after presenting with general convulsion. CT scan on arrival showed a large mass of the left frontal region and slightly high-density linear lesion in the right cerebellar hemisphere. MRI also revealed well-enhanced mass in the left frontal region and parallel linear striation in the right cerebellar hemisphere. But, the patient had neither cerebellar dysfunction nor signs of increased intracranial pressure. The patient had angioma of the left breast and bilateral benign struma, no typical manifestation of Cowden syndrome. Removal of the frontal tumor caused the convulsion was subsequently performed. The pathological examination was atypical meningioma. After the operation, radiation therapy was not done because of the total removal of tumor and intension on patient side. Fortunately, the patient had no further adverse neurological events postoperatively. However, we should continuously take account to not only the recurrence of meningioma but also the enlargement of the cerebellar lesion and the complication of malignant tumors in whole body.