False Positive Diagnosis of Hepatocellular Carcinoma in Liver Resection Patients.
	    		
		   		
		   			
		   		
	    	
    	 
    	10.3346/jkms.2017.32.2.315
   		
        
        	
        	
        	
        		- Author:
	        		
		        		
		        		
			        		Hongeun LEE
			        		
			        		
			        		
			        			1
			        			
			        		
			        		
			        		
			        		
			        		;
		        		
		        		
		        		
			        		Jeong Hee YOON
			        		
			        		;
		        		
		        		
		        		
			        		Hyeyoung KIM
			        		
			        		;
		        		
		        		
		        		
			        		Nam Joon YI
			        		
			        		;
		        		
		        		
		        		
			        		Suk Kyun HONG
			        		
			        		;
		        		
		        		
		        		
			        		Kyung Chul YOON
			        		
			        		;
		        		
		        		
		        		
			        		Hyo Sin KIM
			        		
			        		;
		        		
		        		
		        		
			        		Sung Woo AHN
			        		
			        		;
		        		
		        		
		        		
			        		Jin Young CHOI
			        		
			        		;
		        		
		        		
		        		
			        		YoungRok CHOI
			        		
			        		;
		        		
		        		
		        		
			        		Hae Won LEE
			        		
			        		;
		        		
		        		
		        		
			        		Ju Yeon YI
			        		
			        		;
		        		
		        		
		        		
			        		Kyoung Bun LEE
			        		
			        		;
		        		
		        		
		        		
			        		Kwang Woong LEE
			        		
			        		;
		        		
		        		
		        		
			        		Kyung Suk SUH
			        		
			        		
		        		
		        		
		        		
		        		
		        			
			        		
			        		Author Information
			        		
		        		
		        		
			        		
			        		
			        			1. Department of Surgery, Seoul National University College of Medicine, Seoul, Korea. gsleenj@hanmail.net
			        		
		        		
	        		
        		 
        	
        	
        	
        		- Publication Type:Original Article
 
        	
        	
        		- Keywords:
        			
	        			
	        				
	        				
			        		
				        		Hepatocellular Carcinoma;
			        		
			        		
			        		
				        		False-positive Diagnosis;
			        		
			        		
			        		
				        		Clinical Diagnosis;
			        		
			        		
			        		
				        		Liver Resection
			        		
			        		
	        			
        			
        		
 
        	
            
            	- MeSH:
            	
	        			
	        				
	        				
				        		
					        		Adenoma;
				        		
			        		
				        		
					        		Adenoma, Bile Duct;
				        		
			        		
				        		
					        		Alcoholism;
				        		
			        		
				        		
					        		alpha-Fetoproteins;
				        		
			        		
				        		
					        		Angiomyolipoma;
				        		
			        		
				        		
					        		Carcinoma, Hepatocellular*;
				        		
			        		
				        		
					        		Cohort Studies;
				        		
			        		
				        		
					        		Cystadenocarcinoma;
				        		
			        		
				        		
					        		Diagnosis*;
				        		
			        		
				        		
					        		Diagnostic Imaging;
				        		
			        		
				        		
					        		Hemangioma;
				        		
			        		
				        		
					        		Hepatitis;
				        		
			        		
				        		
					        		Hepatoblastoma;
				        		
			        		
				        		
					        		Humans;
				        		
			        		
				        		
					        		Inflammation;
				        		
			        		
				        		
					        		Liver*;
				        		
			        		
				        		
					        		Nasopharynx;
				        		
			        		
				        		
					        		Prevalence;
				        		
			        		
				        		
					        		Reference Values;
				        		
			        		
				        		
					        		Retrospective Studies
				        		
			        		
	        			
	        			
            	
            	
 
            
            
            	- From:Journal of Korean Medical Science
	            		
	            		 2017;32(2):315-320
	            	
            	
 
            
            
            	- CountryRepublic of Korea
 
            
            
            	- Language:English
 
            
            
            	- 
		        	Abstract:
			       	
			       		
				        
				        	The diagnosis of hepatocellular carcinoma (HCC) is based on imaging studies particularly in high-risk patients without histologic confirmation. This study evaluated the prevalence and characteristics of false-positively diagnosed HCC in a liver resection cohort for HCC. A retrospective review was performed of 837 liver resection cases for clinically diagnosed HCC between 2005 and 2010 at our institute. High-risk patients with tumors > 1 cm with one or two image findings consistent with HCC and tumors < 1 cm with two or more image findings consistent with HCC with persistently increased serum alpha-fetoprotein (AFP) levels above the normal range with underlying inhibited hepatitis activity underwent liver resection. The false-positive rate was 2.2% (n = 18). Of the 18 patients, 7 patients (0.8%) were diagnosed with benign conditions (one each of hemangioma, inflammation, cortical adenoma, dysplastic nodule, angiomyolipoma, bile duct adenoma, and non-neoplastic liver parenchyme) and 11 patients (1.3%) were diagnosed with malignancies (cholangiocarcinoma [n = 6], hepatoblastoma [n = 2], and one each of lymphoepithelioma-like carcinoma, ovarian cystadenocarcinoma, and nasopharynx carcinoma metastasis). The clinical characteristics of pathologically diagnosed HCC patients were similar (P > 0.05) compared to non-HCC patients except for higher rate of history of alcoholism (P < 0.05) observed in non-HCC patients. Four of 18 non-HCC patients (22.2%) showed diagnostic discordance on the dynamic imaging study. Despite the recent progression in diagnostic imaging techniques, 2.2% of cases were false-positively diagnosed as HCC in a liver resection patient cohort; and the final diagnosis was benign disease in 0.8% of liver resection patients clinically diagnosed with HCC.