Laterally Spreading Tumor of the Rectum Delineated with Linked Color Imaging Technology

Masahiro O, Hirotsugu S, etc

Clin Endosc. 2016 Mar; 49(2) Impact factor 0.94

A 66-year-old woman with a 40-mm laterally spreading tumor of the rectum was referred for endoscopic resection. Before the endoscopic resection, we observed the lesion with an EC-L590ZW endoscope with the LASEREO system (FUJIFILM Co., Tokyo, Japan), with white light (Fig. 1A) and with Linked Color Imaging (LCI) (Fig. 1B). The lesion was clearly seen as a bright reddish area on LCI. Compared with the white light image, the LCI image makes the lesion more easily recognizable, thanks to the striking color contrast between the neoplastic mucosa and the normal mucosa. The lesion was diagnosed as an adenoma on the basis of the magnified BLI images. Successful en bloc endoscopic submucosal dissection was performed for the lesion, and the diagnosis of high-grade adenoma with negative resection margins was confirmed histopathologically.

LCI may facilitate the detection of flat colorectal neoplasms without magnification. After the detection of lesions, BLI images are easily produced with a push of a button for use in qualitative diagnosis. Further studies are needed to confirm the utility of LCI.