%0 Journal Article
%T Visualization of Laterally Spreading Colorectal Tumors by Using Image-Enhanced Endoscopy
%A Naoto Tamai
%A Yutaka Saito
%A Taku Sakamoto
%A Takeshi Nakajima
%A Takahisa Matsuda
%A Namasivayam Vikneswaran
%A Hisao Tajiri
%J Gastroenterology Research and Practice
%D 2012
%I Hindawi Publishing Corporation
%R 10.1155/2012/638391
%X Laterally spreading tumors may sometimes evade detection by colonoscopy. This study aimed to evaluate the use of image-enhanced endoscopy for visualizing laterally spreading tumors of the nongranular type. We reviewed consecutive patients with 47 non-granular-type laterally spreading tumors that had been examined using white-light imaging, autofluorescence imaging, narrow-band imaging, and chromoendoscopy with indigo carmine. The quality of visualization was evaluated using a 5-point scale by less- and more-experienced endoscopists. Autofluorescence imaging provided significantly better visualization than white-light imaging for both less-experienced and experienced endoscopists. On the other hand, no significant differences were observed between the quality of visualization provided by white-light imaging and narrow-band imaging for less-experienced endoscopists. Autofluorescence imaging provides high-quality visualization of non-granular-type laterally spreading tumors on still images. Multicenter trials should be conducted to confirm the usefulness of autofluorescence imaging in detecting laterally spreading colorectal tumors.
%U http://www.hindawi.com/journals/grp/2012/638391/