However, the role of EUS-guided fine-needle aspiration of GDCs is uncertain because the cytological features of GDC may closely resemble those of pancreatic MCNs, and GDCs with elevated levels of carcinoembryonic antigen and carbohydrate antigen 19-9 have been reported, which mimic findings in pancreatic MCNs [7, 15]. This evidence concerns the gene CEACAM5 and lipoid nephrosis.