Flat colorectal lesions: colonoscopic detection without dye spray or magnification and clinical significance.

Objective: The detection of flat colorectal lesions with possible malignant potential has been described by Japanese endoscopists. This study looks at the detection of flat lesions using standard colonoscopic techniques and examines the clinical significance of these lesions.

Methods: The records of patients who underwent complete colonoscopy by a single colorectal surgeon in an outpatient setting over a 4-year period were reviewed.

Treatment of acute malignant colorectal obstruction with self-expandable metallic stents.

Background: Malignant left-sided large bowel obstruction from intraluminal and extrinsic causes constitutes a surgical emergency. When conservative measures fail, emergent surgery is usually required, which carries increased morbidity and mortality compared with elective resections. In many situations, a stoma is created and further surgery may be required later to re-establish bowel continuity.