[Confocal laser endomicroscopy of gastrointestinal tract: history, problems and perspectives in children].

In this review history, principles, technique and clinical applications of confocal laser endomicroscopy are briefly described. This technology allows to expand the diagnostic ability of traditional white light endoscopy and to assess effectiveness of therapeutic procedures in different gastrointestinal diseases. New experimental and clinical data in assessing small bowel barrier dysfunction as a predictor of relapse for inflammatory bowel disease is presented. Problems and perspectives regarding application of optical biopsy for gastrointestinal tract in pediatric practice are discussed.