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				Nodules on lungs
			 
			 
			
		
		
		
		Sometimes what looks like nodules on a CT scan is nonexistant on a PET scan, or it can be identified as scarring from radiation. My doctor has always followed up suspicious CT scans with PET scans. I have considerable scarring to the upper lobe of my right lung from the 33 radiation treatments I received. 
		
	
		
		
		
		
		
		
		
		
		
	
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