Intracranial meningioma with pulmonary metastases: diagnosis by percutaneous fine-needle aspiration biopsy and electron microscopy.

The authors report a patient with a history of recurrent intracranial meningiomas in whom two lung nodules developed. A percutaneous fine-needle aspiration biopsy of one nodule demonstrated spindle-form cells; the tumour was specifically diagnosed as metastatic meningioma on the basis of electron microscopic findings.