Birt-Hogg-Dubé Syndrome Associated with a Renal Tumor
	    		
		   		
		   			
		   		
	    	
    	 
    	10.3904/kjm.2019.94.4.379
   		
        
        	
        	
        	
        		- Author:
	        		
		        		
		        		
			        		Su Jin OH
			        		
			        		
			        		
			        			1
			        			
			        		
			        		
			        		
			        		
			        		;
		        		
		        		
		        		
			        		Ki Eun HWANG
			        		
			        		;
		        		
		        		
		        		
			        		Eun Taik JEONG
			        		
			        		;
		        		
		        		
		        		
			        		Hak Ryul KIM
			        		
			        		;
		        		
		        		
		        		
			        		Keum Ha CHOI
			        		
			        		;
		        		
		        		
		        		
			        		Dae Woong RYU
			        		
			        		
		        		
		        		
		        		
		        		
		        			
			        		
			        		Author Information
			        		
		        		
		        		
			        		
			        		
			        			1. Department of Internal Medicine, Wonkwang University Hospital, Iksan, Korea. kshryj@wku.ac.kr
			        		
		        		
	        		
        		 
        	
        	
        	
        		- Publication Type:Case Report
 
        	
        	
            
            
            	- From:Korean Journal of Medicine
	            		
	            		 2019;94(4):379-382
	            	
            	
 
            
            
            	- CountryRepublic of Korea
 
            
            
            	- Language:English
 
            
            
            	- 
		        	Abstract:
			       	
			       		
				        
				        	 Birt-Hogg-Dubé syndrome (BHD) is a rare autosomal dominant disorder characterized by the formation of hair follicle tumors, kidney tumors, and pulmonary cysts with recurrent spontaneous pneumothorax. A 44-year-old woman visited Wonkwang University Hospital with mild dyspnea. A chest X-ray on admission revealed pneumothorax in both lung fields. Chest computed tomography (CT) revealed both pneumothorax and multiple, irregularly shaped, variable-sized cysts in both lung fields. Upon physical examination, white dome-shaped papules were observed on the face. Histological examination of the skin lesion confirmed fibrofolliculoma, and genetic studies revealed a folliculin gene mutation. Abdominal CT revealed a 1-cm small solid renal mass at the lower pole of the right kidney. We surgically removed the renal tumor, and a histological diagnosis of oncocytoma was made. Here, we report a case of BHD that demonstrated all three clinical manifestations; this is the first case report of its kind in Korea.