Colonoscopy and polypectomy with a side-viewing endoscope.

Area of Science:

• Gastroenterology
• Endoscopic Surgery

Background:

• Colorectal polyps located behind mucosal folds or bowel bends present challenges for conventional forward-viewing colonoscopy.
• Incomplete polypectomy or surgical intervention may be required for these difficult-to-access polyps.

Purpose of the Study:

• To evaluate the safety and efficacy of using side-viewing duodenoscopes for polypectomy of challenging colorectal polyps.
• To determine if this method can avoid incomplete resection or surgery.

Main Methods:

• A prospective study involving 15 patients with previously unsuccessful forward-viewing colonoscopic polypectomy attempts.
• Polypectomy was performed using a side-viewing duodenoscope, with slight tip bending to achieve an optimal view.
• Patients had a mean age of 63.7 years, and procedures were conducted between April 2000 and August 2003.

Main Results:

• Complete macroscopic removal of colorectal polyps was achieved in 11 out of 15 patients (73.3%).
• Complete removal was not possible for one polyp near the ileocecal valve, one large flat rectal adenoma, one recurrent rectal polyp, and another ileocecal valve polyp.
• No procedure-related complications were observed, and endoscopic follow-up in seven patients showed no evidence of recurrence after a mean of 27 months.

Conclusions:

• Polypectomy using a side-viewing duodenoscope is a safe and effective therapeutic option.
• This technique is valuable for managing colorectal polyps that are not adequately accessible with standard forward-viewing colonoscopes.