Pigmented Villonodular Synovitis on Lumbar Spine : A Case Report and Literature Review.
	    		
		   		
		   			
		   		
	    	
    	 
    	10.3340/jkns.2014.56.3.272
   		
        
        	
        	
        	
        		- Author:
	        		
		        		
		        		
			        		Sung Woon OH
			        		
			        		
			        		
			        			1
			        			
			        		
			        		
			        		
			        		
			        		;
		        		
		        		
		        		
			        		Min Ho LEE
			        		
			        		;
		        		
		        		
		        		
			        		Whan EOH
			        		
			        		
		        		
		        		
		        		
		        		
		        			
			        		
			        		Author Information
			        		
		        		
		        		
			        		
			        		
			        			1. Department of Neurosurgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea. w.eoh@samsung.com
			        		
		        		
	        		
        		 
        	
        	
        	
        		- Publication Type:Case Report
 
        	
        	
        		- Keywords:
        			
	        			
	        				
	        				
			        		
				        		Pigmented villonodular synovitis;
			        		
			        		
			        		
				        		Lumbar spine;
			        		
			        		
			        		
				        		Giant cell tumor
			        		
			        		
	        			
        			
        		
 
        	
            
            	- MeSH:
            	
	        			
	        				
	        				
				        		
					        		Adult;
				        		
			        		
				        		
					        		Back Pain;
				        		
			        		
				        		
					        		Diagnosis;
				        		
			        		
				        		
					        		Giant Cell Tumors;
				        		
			        		
				        		
					        		Humans;
				        		
			        		
				        		
					        		Hyperplasia;
				        		
			        		
				        		
					        		Joint Diseases;
				        		
			        		
				        		
					        		Leg;
				        		
			        		
				        		
					        		Macrophages;
				        		
			        		
				        		
					        		Male;
				        		
			        		
				        		
					        		Recurrence;
				        		
			        		
				        		
					        		Spine*;
				        		
			        		
				        		
					        		Synovitis, Pigmented Villonodular*
				        		
			        		
	        			
	        			
            	
            	
 
            
            
            	- From:Journal of Korean Neurosurgical Society
	            		
	            		 2014;56(3):272-277
	            	
            	
 
            
            
            	- CountryRepublic of Korea
 
            
            
            	- Language:English
 
            
            
            	- 
		        	Abstract:
			       	
			       		
				        
				        	Pigmented villonodular synovitis (PVNS) is a benign proliferative joint disease with an uncertain etiology that uncommonly involves the spine. We present a case of PVNS involving the lumbar spine. A 38-year-old male developed back pain and pain in both legs caused by a mass in the L4 region of the right lamina. After gross total tumor removal, the symptoms improved. The pathological finding was synovial hyperplasia with accumulation of hemosiderin-laden macrophages. He was diagnosed with PVNS and experienced no recurrence for up to 2 years after surgery. In this report, we review the previous literature and discuss etiology, clinical manifestations, diagnosis, and treatment.