Abstract
There are no special techniques for conquering difficult cases of colonoscopy ; careful insertion and being true to basic techniques are most important in these cases. As flexible and yielding scopes are more often useful in difficult cases, the PCF-PQ260L/I scope is frequently used at our center. The examiner must always think of each examination as a challenge and must not perform the procedures incautiously. It is important to always pay attention to the sensation of the hands, as there is a limit to the improvement of insertion techniques if the minute sensations of the hands are not appreciated. Striving to perform less painful procedures will make the examiner conscious of the location and situation of the scope such as twisting, bending and looping, and in the end this will be the key factor in improving insertion techniques.
