By Manabu Muto, Kenshi Yao, Yasushi Sano
With its specialise in slender band imaging, this ebook is a superb reference for brand new in addition to skilled practitioners within the box of endoscopy. slender band imaging has led to a innovative development in diagnostic endoscopy, permitting target analysis and unique detection of lesions. It has greater the potential of endoscopy to facilitate qualitative diagnoses for the good good thing about sufferers who suffer endoscopic examinations. in spite of the fact that, a standardized method of type has no longer but been validated and plenty of clinicians and researchers will not be but hugely expert in using the strategy or studying the pictures which are produced. This atlas addresses these matters, delivering transparent, easy and easy-to-understand descriptions illustrated with beneficiant use of endoscopic images.
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Additional info for Atlas of Endoscopy with Narrow Band Imaging
Blood vessels in the subepithelial layers branch like the veins in a leaf, whereas microvessels that cannot be discerned with WLI can be visualized using NBI. Furthermore, M-NBI examination reveals intraepithelial papillary capillary loops (IPCLs) more clearly than with M-WLI (Fig. 1c, d). 2 Characteristics Under NBI Examination Optical principles dictate that the light intensity of NBI is less than that of WLI, so the images obtained with the former tend to appear darker than with the latter. However, for SCCs of the pharynx and esophagus, the detection power and diagnostic power are considerably superior for NBI than WLI.
The borders as seen at endoscopic examination are shown in Fig. 5. 3 Pointers for Endoscopic Identification of Boundaries Between Hypopharyngeal Subsites The hypopharyngeal region is divided into: (1) the piriform sinus (PS), (2) the postcricoid area (PC), and (3) the posterior wall (PW). Comparison of the Posterior wall (PW) Piriform sinus (PS) Postcricoid area (PC) Fig. 3 Subsites of the hypopharynx 38 M. Muto et al. Fig. 4 Resected specimen of the laryngopharynx and cervical esophagus PS PW PC Lt pyriform sinus (PS) postcricoid area (PC) Rt pyriform sinus (PS) posterior wall (PW) Fig.
The intraepithelial papillary capillaries are capillaries located within the subepithelial papillae, with a vessel diameter of 10–15 µm. The spaces between papillae are approximately 100 µm. The microvascular pattern (MVP) classification (updated version) as visualized using magnifying endoscopy is shown in Fig. 11. Microvascular patterns are broadly divided into four types, each closely reflecting a histopathological type. With type 3 and type 4 vascular pattern as diagnostic markers for cancer, the accuracy for distinguishing between benign and malignant lesions is 95 %.