Diagnostic and therapeutic endoscopic approaches to intraductal papillary mucinous neoplasm

Figure 1 Peroral pancreatoscopy images. A: Peroral pancreatoscopy of the main pancreatic duct demonstrating the presence of papillary tumor; small, ovoid papillary projections can be seen; B: The same projections are pictures here under observation with narrow band imaging; the surface structure of the lesions is much better visualized. (The figure is from Itoi et al[20] and reproduced with permission from Elsevier Inc.)