- Author:
	        		
		        		
		        		
			        		Hyo Jung AN
			        		
			        		
			        		
			        			1
			        			
			        		
			        		
			        		
			        		
			        		;
		        		
		        		
		        		
			        		Jung Eun SEOL
			        		
			        		;
		        		
		        		
		        		
			        		Ji Young YUN
			        		
			        		;
		        		
		        		
		        		
			        		Mi Seon KANG
			        		
			        		
		        		
		        		
		        		
			        		
			        		Author Information
			        		
 - Publication Type:Case Report
 - Keywords: Basal cell carcinoma; Eccrine porocarcinoma
 - MeSH: Carcinoma, Basal Cell*; Eccrine Porocarcinoma*; Humans; Male; Middle Aged
 - From:Annals of Dermatology 2018;30(5):602-605
 - CountryRepublic of Korea
 - Language:English
 - Abstract: A ‘collision’ tumor refers to the existence of two different neoplasms within the same tumor. Sometimes, the term ‘biphasic tumor’ is also used. However, a ‘collision’ tumor is defined as the occurrence of two neoplasms within proximity of each other yet maintaining distinctly defined, separate boundaries. In contrast, a ‘biphasic’ tumor demonstrates two or more phenotypically distinct neoplastic cell populations merging within the same space. Here, we report a case of collision tumor associated with sarcomatoid eccrine porocarcinoma and basal cell carcinoma arising in a 57-year-old male patient.
 
            
