Reliability of narrow-band imaging (NBI) hysteroscopy: A comparative study  Ettore Cicinelli, M.D., Raffaele Tinelli, M.D., Giuseppe Colafiglio, M.D., Addolorata Pastore, M.D., Salvatore Mastrolia, M.D., Achiropita Lepera, M.D., Lotte Clevin, M.D.  Fertility and Sterility  Volume 94, Issue 6, Pages 2303-2307 (November 2010) DOI: 10.1016/j.fertnstert.2009.12.083 Copyright © 2010 American Society for Reproductive Medicine Terms and Conditions

Figure 1 Appearance at NBI of polyp (A), submucous myoma (B), and high-risk hyperplasia (C). Polyp is characterized by a vascular axis, myoma by a regular branching of vessels on a whitish surface, and high-risk hyperplasia by dilated but regular vascular network and marked abnormality in the mucosal architecture. Fertility and Sterility 2010 94, 2303-2307DOI: (10.1016/j.fertnstert.2009.12.083) Copyright © 2010 American Society for Reproductive Medicine Terms and Conditions

Figure 2 Percentage of correspondence between WL (blue bars) and NBI (red bars) hysteroscopy versus histology for each hysteroscopic finding. Fertility and Sterility 2010 94, 2303-2307DOI: (10.1016/j.fertnstert.2009.12.083) Copyright © 2010 American Society for Reproductive Medicine Terms and Conditions

Figure 3 Chronic endometritis at WL (A) and NBI hysteroscopy (B). Vasodilation and hemorrhagic spots are highlighted by NBI. Fertility and Sterility 2010 94, 2303-2307DOI: (10.1016/j.fertnstert.2009.12.083) Copyright © 2010 American Society for Reproductive Medicine Terms and Conditions

Figure 4 Endometrial cancer diagnosed as polyp at WL hysteroscopy (A) and correctly recognized at NBI (B) thanks to enhanced visualization of vessels' abnormalities. Fertility and Sterility 2010 94, 2303-2307DOI: (10.1016/j.fertnstert.2009.12.083) Copyright © 2010 American Society for Reproductive Medicine Terms and Conditions