Four Cases of Atypical Chronic Myeloid Leukemia.
	    		
		   		
	    	
    	
    	
   		
        
        	
        	
        	
        		- Author:
	        		
		        		
		        		
			        		Soo Jin YOO
			        		
			        		
			        		
			        			1
			        			
			        		
			        		
			        		
			        		
			        		;
		        		
		        		
		        		
			        		Su Gyoung KANG
			        		
			        		;
		        		
		        		
		        		
			        		Eul Ju SEO
			        		
			        		;
		        		
		        		
		        		
			        		Chan Jeoung PARK
			        		
			        		;
		        		
		        		
		        		
			        		Kyoo Hyung LEE
			        		
			        		;
		        		
		        		
		        		
			        		Hyun Sook CHI
			        		
			        		
		        		
		        		
		        		
		        		
		        			
			        		
			        		Author Information
			        		
		        		
		        		
			        		
			        		
			        			1. Department of Clinical Pathology, University of Ulsan College of Medicine and Asan Medical Center, Seoul, Korea. cjpark@amc.seoul.kr
			        		
		        		
	        		
        		 
        	
        	
        	
        		- Publication Type:Case Report
 
        	
        	
        		- Keywords:
        			
	        			
	        				
	        				
			        		
				        		Atypical chronic myeloid leukemia;
			        		
			        		
			        		
				        		FAB guideline;
			        		
			        		
			        		
				        		bcr-abl negative chronic myeloid leukemia
			        		
			        		
	        			
        			
        		
 
        	
            
            	- MeSH:
            	
	        			
	        				
	        				
				        		
					        		Basophils;
				        		
			        		
				        		
					        		Bone Marrow;
				        		
			        		
				        		
					        		Classification;
				        		
			        		
				        		
					        		Diagnosis;
				        		
			        		
				        		
					        		Gene Rearrangement;
				        		
			        		
				        		
					        		Humans;
				        		
			        		
				        		
					        		Hydroxyurea;
				        		
			        		
				        		
					        		Hyperplasia;
				        		
			        		
				        		
					        		Leukemia, Myelogenous, Chronic, BCR-ABL Positive;
				        		
			        		
				        		
					        		Leukemia, Myeloid, Chronic, Atypical, BCR-ABL Negative*;
				        		
			        		
				        		
					        		Leukocytosis
				        		
			        		
	        			
	        			
            	
            	
 
            
            
            	- From:Korean Journal of Clinical Pathology
	            		
	            		 2002;22(2):75-79
	            	
            	
 
            
            
            	- CountryRepublic of Korea
 
            
            
            	- Language:Korean
 
            
            
            	- 
		        	Abstract:
			       	
			       		
				        
				        	Four cases of atypical chronic myeloid leukemia (aCML), which were compatible with the FAB guideline for the classification of chronic myeloid leukemia (CML), are presented. All 4 patients showed the onset in old age, leukocytosis with an increase in the number of immature granulo-cytes, monocytosis, a low basophil count, and a dysgranulopoiesis in the peripheral blood, a nega-tivity of the bcr-abl gene rearrangement, and a hypercellular marrow with marked granulocytic hyperplasia and dyshemopoietic features. Two patients died within 3 months and the other 2 are currently under observation after a partial response to hydroxyurea. aCML is known to have a poor therapeutic response and outcome without a blastic crisis. A greater deal of concern regarding aCML is required for an accurate diagnosis and classification.