Megachannel is a newly developed colonic access system allowing rapid and multiple passes of the colonoscope to the right colon.

The investigators want to conduct a multinational study to evaluate the safety and clinical feasibility of placing a 100 cm Megachannel prototype in the right colon.

Patients scheduled for colonoscopy with suspected right colonic polypoid lesions will be included. The prototype will loaded onto a 160 cm lower GI endoscope and introduced via colonoscopic guidance. Time to cecum, total investigation time, clinical feasibility and complications will be recorded.

Inclusion Criteria:

• patients scheduled for colonoscopy with suspected large or multiple polys in the right colon

Exclusion Criteria:

• previous abdominal surgery
• history or currently diagnosed intra-abdominal cancer
• patients presenting with unstable angina
• drug abusers
• pregnant women
• patients with known colonic strictures