Two Cases of Seronegative Paraneoplastic Neurologic Syndrome with Opsoclonus Nystagmus
	    		
		   		
		   			
		   		
	    	
    	 
    	10.3342/kjorl-hns.2018.00318
   		
        
        	
        	
        	
        		- Author:
	        		
		        		
		        		
			        		Seong Hoon BAE
			        		
			        		
			        		
			        			1
			        			
			        		
			        		
			        		
			        		
			        		;
		        		
		        		
		        		
			        		Jeon Mi LEE
			        		
			        		;
		        		
		        		
		        		
			        		Sung Huhn KIM
			        		
			        		
		        		
		        		
		        		
		        		
		        			
			        		
			        		Author Information
			        		
		        		
		        		
			        		
			        		
			        			1. Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea. fledermaus@yuhs.ac
			        		
		        		
	        		
        		 
        	
        	
        	
        		- Publication Type:Case Report
 
        	
        	
        		- Keywords:
        			
	        			
	        				
	        				
			        		
				        		Myoclonus;
			        		
			        		
			        		
				        		Nystagmus;
			        		
			        		
			        		
				        		Opsoclonus-myoclonus syndrome;
			        		
			        		
			        		
				        		Paraneoplastic syndrome, neurologic
			        		
			        		
	        			
        			
        		
 
        	
            
            	- MeSH:
            	
	        			
	        				
	        				
				        		
					        		Brain;
				        		
			        		
				        		
					        		Dizziness;
				        		
			        		
				        		
					        		Humans;
				        		
			        		
				        		
					        		Magnetic Resonance Imaging;
				        		
			        		
				        		
					        		Myoclonus;
				        		
			        		
				        		
					        		Ocular Motility Disorders;
				        		
			        		
				        		
					        		Opsoclonus-Myoclonus Syndrome;
				        		
			        		
				        		
					        		Paraneoplastic Syndromes, Nervous System;
				        		
			        		
				        		
					        		Prevalence
				        		
			        		
	        			
	        			
            	
            	
 
            
            
            	- From:Korean Journal of Otolaryngology - Head and Neck Surgery
	            		
	            		 2019;62(6):355-360
	            	
            	
 
            
            
            	- CountryRepublic of Korea
 
            
            
            	- Language:Korean
 
            
            
            	- 
		        	Abstract:
			       	
			       		
				        
				        	The dizziness associated with paraneoplastic neurologic syndrome is hard to diagnose clinically because the prevalence of disease is rare, and radiologic and serologic examination result may come out normal. Opsoclonus-myoclonus symdrome is a representative of classical paraneoplastic neurologic syndromes. In this paper, we report 2 cases of paraneoplastic neurologic syndromes with negative serologic auto-antibody test and no brain lesion on MRI. Both cases were eventually diagnosed through PET. Patients with opsoclonus-myoclonus type nystagmus should be evaluated for paraneoplastic neurologic syndrome even if their radiologic and serologic findings are normal.