Pre - Pyloric Ulcer - Endoscopy (6 of 9)

Another image and video clip, Chromoendoscopy with methylene blue. Tissue staining during endoscopy (chromoendoscopy) is a technique used to study the fine details of the mucosa throughout the gastrointestinal tract. Chromoendoscopy combines high resolution endoscopy with various methods of vital staining of epithelial structures. In these methods, during endoscopy, tissues are coloured by a stain introduced through a spray catheter. The staining techniques are technically simple, economical and easy to perform. Various stains produce different optical effects. Contrast staining with indigo carmine fills folds, villi and other uneven areas and hence emphasises the structure. A different image is obtained by using absorptive stains such as methylene blue or Lugols solution which are directly taken up by the cells, thus staining them. An even more differentiated investigation is possible using zoom or magnification endoscopy. This uses special endoscopes capable of enlarging the endoscopic images up to 150 times. It does not take much imagination to predict a dynamic development of chromo- and zoom endoscopy.