The patient’s tumor marker serum levels, such as those for carcinoembryonic antigen (CEA), carbohydrate antigen 19-9 (CA19-9), pancreatic monoclonal antigen type 2 (Dupan-2) and s-pancreas-1 antigen (Span-1) were within the normal range. This evidence concerns the gene CEACAM5 and neoplasm.