HISTORY:
                    This is a middle aged gentleman who presented with a ventricular mass.  An intra-operative consultation was performed.  The final diagnosis required more extensively workup. 
                    
                    
                 
						
                         
			            
			             
                       
                          
                        
                
                    
                 
                            What is this lesion?
                            
                                - Schwannoma
 
                                - Meningioma
 
                                - Pilocytic astrocytoma
 
                                - Ependymoma