Small Cell Neuroendocrine Carcinoma of the Lacrimal Sac Presenting with Lacrimal Duct Obstruction
	    		
		   		
		   			
		   		
	    	
    	 
    	10.3341/jkos.2021.62.9.1282
   		
        
        	
        	
        	
        		- Author:
	        		
		        		
		        		
			        		Yeong A CHOI
			        		
			        		
			        		
			        			1
			        			
			        		
			        		
			        		
			        		
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			        		Junhyuk SON
			        		
			        		
		        		
		        		
		        		
		        		
		        			
			        		
			        		Author Information
			        		
		        		
		        		
			        		
			        		
			        			1. Department of Ophthalmology, Yeungnam University College of Medicine, Daegu, Korea
			        		
		        		
	        		
        		 
        	
        	
        	
        		- Publication Type:Case Report
 
        	
        	
            
            
            	- From:Journal of the Korean Ophthalmological Society
	            		
	            		 2021;62(9):1282-1286
	            	
            	
 
            
            
            	- CountryRepublic of Korea
 
            
            
            	- Language:Korean
 
            
            
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		        	Abstract:
			       	
			       		
				        
				        	Purpose:We report a case of primary small cell neuroendocrine carcinoma arising from the lacrimal sac. Case summary: A 54-year-old man presented with epiphora that had been present for 1 month. He underwent lacrimal syringe analysis of the lower punctum in the right eye, which demonstrated fluid regurgitation from the upper punctum. Computed tomography revealed a 3.0 × 3.4 × 3.0 cm mass with an ill-defined margin in the right lacrimal sac, which demonstrated invasion of the lacrimal duct and bony destruction of the inferior and medial orbital walls. Incisional biopsy and histologic examination showed that the tumor was composed of small round tumor cells. On the basis of histopathological and immunohistochemical evaluations, a diagnosis of small cell neuroendocrine carcinoma was made. The patient received chemotherapy. 
				        	
				        
				        	Conclusions:To the best of our knowledge, this is the first case of primary small cell neuroendocrine carcinoma arising from the lacrimal sac in Korea. Small cell neuroendocrine carcinoma in the lacrimal sac should be regarded as a differential diagnosis for patients with a nasolacrimal duct obstruction.