Malignant meningioma metastasizing through the cerebrospinal pathways.
A 53-year old man presented with a malignant meningioma which was incompletely removed. The tumour subsequently metastasized through the cerebrospinal pathways causing clinical signs through invasion of the cranial nerve roots. Microscopically, the metastatic deposits displayed a papillary pattern and increased anaplastic cytological features.
D001932:Brain Neoplasms / Q000473:pathology*; D002555:Cerebrospinal Fluid; D003391:Cranial Nerves / Q000473:pathology; D005625:Frontal Lobe / Q000473:pathology; D006801:Humans; D008297:Male; D008579:Meningioma / Q000473:pathology*; D008875:Middle Aged; D009362:Neoplasm Metastasis / Q000473:pathology*