OLYMPUS On-Demand Library
Medical Products and Solutions
Discover detailed information about medical products and solutions from Olympus.

Colorectal Case 1

Prof. Stefan Seewald​

GastroZentrum Hirslanden, Zurich

Procedure Information


Scope:CF-EZ1500DI

Case: Sessile serrated adenoma

Organ: Colon

Patient information: M, 69

Medical history: Preventive colonoscopy

1. WLI Overview

#WLI #A7 structure enhancement #Auto Iris

Thickening of fold indicates a lesion extending on a fold at 2 o’clock

2. TXI 1 Overview

#TXI Mode1 #A7 Structure Enhancement #Auto Iris

TXI increases brightness and color contrast. However, visibility of the lesion is not amplified sufficiently.

3. NBI Overview

#NBI #NBI Color Mode 3 #B7 structure enhancement #Auto Iris

With NBI, the color contrast between healthy background mucosa and the lesion is most comprehensive in this case.

4. Approach with NBI

#NBI #NBI Color Mode 3 #B7 structure enhancement #Auto Iris

With NBI, we can observe areas with high and low vessels density and irregular pattern.

5. Near Focus mode with NBI

#NBI #NBI Color Mode 3 #B7 structure enhancement #Auto Iris

Near Focus mode + 1.6x electronic zoom reveals adenoma with high degree of irregularity (JNET 2B).

6. Near Focus mode with NBI

#NBI #NBI Color Mode 3 #B7 structure enhancement #Auto Iris

Near Focus mode + 1.6x electronic zoom reveals adenoma with high degree of irregularity (JNET 2B).

Case video

Overall Comment

In this case, NBI was most helpful to identify and characterize the lesion underlining existing evidence that it is working well if the colon is clean. EDOF and Near Focus are easy to use to characterize and predict endoscopic resectability of the lesion.

* Specifications, design and accessories are subject to change without any notice or obligation on the part of the manufacturer.