Advanced Endoscopic Imaging in Colonoscopy

The aim of the study is to evaluate the usefulness of high-tech endoscopy in clinical practice. The important elements of this evaluation are: * Evaluation of the character of neoplastic lesions in the colon based on different imaging techniques * Verification of the endoscopic image with histopathologic descriptions * Establishing the type of the lesion on the basis of Kudo and NICE classifications * Comparison of the result of histopathological examination with the macroscopic type of the lesion * Determination of the most advanced lesions (MAL) * Comparison of the cecal intubation time * Evaluation of the type of anesthesia used during colonoscopy * Subjective assessment of the severity of pain according to VAS (visual analogue scale) * Comparison of the accuracy of the location of lesions on the basis of endoscopic navigation * Comparison of the total examination time * Comparison of adenoma detection rate