Endoscopic Ultrasonography in the Evaluation of Indeterminate Biliary Strictures.
	    		
		   		
	    	
    	
    	
   		
        
        	
        	
        	
        		- Author:
	        		
		        		
		        		
			        		Mark TOPAZIAN
			        		
			        		
			        		
			        			1
			        			
			        		
			        		
			        		
			        		
			        		
		        		
		        		
		        		
		        		
		        			
			        		
			        		Author Information
			        		
		        		
		        		
			        		
			        		
			        			1. Division of Gastroenterology and Hepatology, Department of Medicine, Mayo Clinic, Rochester, MN, USA. topazian.mark@mayo.edu
			        		
		        		
	        		
        		 
        	
        	
        	
        		- Publication Type:Review
 
        	
        	
        		- Keywords:
        			
	        			
	        				
	        				
			        		
				        		Endoscopic ultrasound;
			        		
			        		
			        		
				        		Pathologic constriction;
			        		
			        		
			        		
				        		Fine-needle biopsy;
			        		
			        		
			        		
				        		Bile ducts
			        		
			        		
	        			
        			
        		
 
        	
            
            	- MeSH:
            	
	        			
	        				
	        				
				        		
					        		Bile Ducts;
				        		
			        		
				        		
					        		Biopsy, Fine-Needle;
				        		
			        		
				        		
					        		Cholangiocarcinoma;
				        		
			        		
				        		
					        		Constriction, Pathologic;
				        		
			        		
				        		
					        		Endoscopic Ultrasound-Guided Fine Needle Aspiration;
				        		
			        		
				        		
					        		Endosonography;
				        		
			        		
				        		
					        		Needles;
				        		
			        		
				        		
					        		Neoplasm Metastasis;
				        		
			        		
				        		
					        		Seeds
				        		
			        		
	        			
	        			
            	
            	
 
            
            
            	- From:Clinical Endoscopy
	            		
	            		 2012;45(3):328-330
	            	
            	
 
            
            
            	- CountryRepublic of Korea
 
            
            
            	- Language:English
 
            
            
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		        	Abstract:
			       	
			       		
				        
				        	Biliary strictures may be due to a variety of benign and malignant processes. Imaging with endoscopic ultrasonography (EUS) often suggests the diagnosis, but is usually not definitive. EUS-guided fine needle aspiration (FNA) facilitates the diagnosis of extrahepatic biliary strictures, although peritioneal metastases due to needle tract seeding may occur after EUS-FNA of cholangiocarcinoma. In addition to diagnosis of strictures, EUS may play an important role in staging of cholangiocarcinoma.