my husband is afraid he might have colon cancer. He has tenderness and a feeling of swelling  in the upper right abdomen. So far he did all the cancer blood markers, which where negative, and an accurate ultrasound, which showed kidneys, bladder, liver etc and found no anomalies whatsoever, and a fecal test, which was negative for blood.  He did not have a colonoscopy yet. He's 52, smoker, and lately has been suffering with Lichen Ruber in his torso (front and back) and head. Any clues? Thank you
                                                        
                                                     
                                                    
                                                        
                                                            
                                                            
                                                            
                                                                posted on
                                                            
                                                                Fri, 27 Dec 2013 
                                                            
                                                            
                                                            
                                                            
                                                                
                                                                    
                                                                    
                                                                    Fri, 27 Dec 2013
                                                                    
                                                                    
  Answered on 
                                                                 
                                                                
                                                                    
                                                                    
                                                                    Fri, 27 Dec 2013
                                                                    
                                                                    
  Last reviewed on