Proximal retroflexion versus second forward view of the right colon during screening colonoscopy: A multicentre randomized controlled trial.

Background: Colonoscopy is the gold standard investigation for the detection of colorectal cancer, but the right colon is more difficult to examine than the left colon. A second examination of the proximal colon has the potential to reduce rates of missed pathology.

Objective: To determine whether proximal retroflexion improves the adenoma detection rate or other outcomes in the right colon compared with the forward view.

Psychological factors in gastroesophageal reflux disease measured by scl-90-R questionnaire.

Background: An association between psychological factors and gastroesophageal reflux disease has been recognized. Psychological distress can influence the outcomes of the disease.

Aims: To determine the existence of psychological factors in our gastroesophageal reflux disease sample, as well as determine their influence on the outcome of the disease and treatment response.