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Narrow band imaging

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https://www.readbyqxmd.com/read/29323235/the-value-of-narrow-band-imaging-in-diagnosis-of-head-and-neck-cancer-a-meta-analysis
#1
Hui Zhou, Jing Zhang, Linghong Guo, Ji Nie, Chenjing Zhu, Xuelei Ma
Head and neck cancer is difficult to diagnose early. We aimed to estimate the diagnosis value of narrow band imaging(NBI) in head and neck cancers. We identified relevant studies through a search of PubMed, Embase and the Cochrane Library. We used a random effect model. Subgroup analysis and meta-regression analysis were performed to estimate the factors which may influence the sensitivity and specificity of the NBI. We included 25 studies with total 6187 lesions. The pooled sensitivity, specificity, positive likelihood rate, negative likelihood rate and diagnostic odds ratios of NBI were 88...
January 11, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29322573/narrow-band-imaging-versus-laryngovideostroboscopy-in-precancerous-and-malignant-vocal-fold-lesions
#2
Anna Rzepakowska, Ewelina Sielska-Badurek, Raul Cruz, Maria Sobol, Ewa Osuch-Wójcikiewicz, Kazimierz Niemczyk
BACKGROUND: This is a comparative analysis of the diagnostic accuracy of narrow band imaging (NBI) and laryngovideostroboscopy (LVS) in the assessment of premalignant and malignant vocal fold lesions. METHODS: A prospective analysis was performed on 105 consecutive patients with vocal fold lesions. The NBI and LVS were obtained before the microsurgery. RESULTS: The NBI and LVS showed no significant differences in identifying premalignant and malignant pathologies...
January 10, 2018: Head & Neck
https://www.readbyqxmd.com/read/29298873/multicentre-prospective-evaluation-of-real-time-optical-diagnosis-of-t1-colorectal-cancer-in-large-non-pedunculated-colorectal-polyps-using-narrow-band-imaging-the-optical-study
#3
Yara Backes, Matthijs P Schwartz, Frank Ter Borg, Frank H J Wolfhagen, John N Groen, Wouter H de Vos Tot Nederveen Cappel, Jeroen van Bergeijk, Joost M J Geesing, Bernhard W M Spanier, Paul Didden, Frank P Vleggaar, Miangela M Lacle, Sjoerd G Elias, Leon M G Moons
OBJECTIVE: This study evaluated the preresection accuracy of optical diagnosis of T1 colorectal cancer (CRC) in large non-pedunculated colorectal polyps (LNPCPs). DESIGN: In this multicentre prospective study, endoscopists predicted the histology during colonoscopy in consecutive patients with LNPCPs using a standardised procedure for optical assessment. The presence of morphological features assessed with white light, and vascular and surface pattern with narrow-band imaging (NBI) were recorded, together with the optical diagnosis, the confidence level of prediction and the recommended treatment...
January 3, 2018: Gut
https://www.readbyqxmd.com/read/29278867/optical-diagnosis-for-colorectal-polyps-a-useful-technique-now-or-in-the-future
#4
REVIEW
Ignasi Puig, Tonya Kaltenbach
In the last few years, interest in the optical diagnosis of colorectal polyps has increased among gastroenterologists. Several studies have shown that the optical diagnosis of small colorectal polyps is safe and feasible in routine clinical practice and is comparable to histopathology. The Narrow-band Imaging International Colorectal Endoscopic Classification provides a validated criterion for the classification of neoplastic and nonneoplastic polyps as well as polyps with deep submucosal invasion using narrow band imaging during real-time colonoscopy...
December 28, 2017: Gut and Liver
https://www.readbyqxmd.com/read/29277482/comparison-of-narrow-band-imaging-and-confocal-laser-endomicroscopy-for-the-detection-of-neoplasia-in-barrett-s-esophagus-a-meta-analysis
#5
Yi-Quan Xiong, Shu-Juan Ma, Hao-Yue Hu, Jing Ge, Li-Zhi Zhou, Shu-Ting Huo, Min Qiu, Qing Chen
AIMS: Barrett's esophagus (BE) predisposes to the development of esophageal neoplasia, including high-grade dysplasia (HGD) and esophageal adenocarcinoma (EAC). A systematic literature review and meta-analysis were performed to assess the accuracy of within-patient comparisons of narrow band imaging (NBI) and confocal laser endomicroscopy (CLE) for diagnosis of HGD/EAC in patients with BE. METHODS: The following databases were examined up to April 2016 without language restriction: PubMed, Embase, Medline, Web of Science and the Cochrane Library...
December 22, 2017: Clinics and Research in Hepatology and Gastroenterology
https://www.readbyqxmd.com/read/29262447/-application-of-narrow-band-imaging-in-the-detection-of-premalignant-and-malignant-lesions-of-the-larynx
#6
J H Wu, X Y Luo
Objective: To evaluate the role of narrow band imaging (NBI) endoscopy in the diagnosis of laryngeal lesions. Methods: A total of 136 patients with laryngeal lesions were examined by NBI and white light (WLI) endoscopy from July 2016 to May 2017. Sensitivity, specificity, accuracy, and positive predictive value (PPV) and negative predictive value (NPV) of NBI and WLI were calculated. SPSS 20.0 software was used to analyze the data. Results: Compared to WLI, NBI showed higher sensitivity (94.9% vs 83.3%), specificity (95...
December 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/29262446/-diagnostic-value-of-narrow-band-imaging-in-detection-of-recurrent-nasopharyngeal-carcinoma
#7
J Y Si, J J Weng, B J Zhang, G P Lan, Y Yang, B Huang, Y L Wang, Y Qin, B Li, X Han, W M Xiong, Y F Si
Objective: To evaluate the diagnostic value and feasibility of narrow-band imaging in detection of recurrent nasopharyngeal carcinoma (NPC). Methods: One thousand three hundred and sixty-four NPC patients who had completed NPC treatment were enrolled. All patients were followed-up with imaging, serological examination of EB virus and nasopharyngeal endoscopy(WL and NBI mode), in which (1) both white light (WL) and NBI modes were done; (2) positive endoscopic patients were given nasopharyngeal biopsy; (3) using histologic finding as criterion standard, the sensitivity, specificity, accuracy and Yonden's index of two modes were compared...
December 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/29259386/endoscopic-submucosal-dissection-in-a-patient-with-esophageal-adenoid-cystic-carcinoma
#8
Kenichi Yoshikawa, Akiyoshi Kinoshita, Yuki Hirose, Keiko Shibata, Takafumi Akasu, Noriko Hagiwara, Takeharu Yokota, Nami Imai, Akira Iwaku, Go Kobayashi, Hirohiko Kobayashi, Nao Fushiya, Hiroyuki Kijima, Kazuhiko Koike, Haruka Kaneyama, Keiichi Ikeda, Masayuki Saruta
We report the first use of endoscopic submucosal dissection (ESD) for the treatment of a patient with adenoid cystic carcinoma of the esophagus (EACC). An 82-year-old woman visited our hospital for evaluation of an esophageal submucosal tumor. Endoscopic examination showed a submucosal tumor in the middle third of the esophagus. The lesion partially stained with Lugol's solution, and narrow band imaging with magnification showed intrapapillary capillary loops with mild dilatation and a divergence of caliber in the center of the lesion...
December 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29250581/magnifying-image-enhanced-endoscopy-for-collagenous-colitis
#9
Masaaki Kobayashi, Takahiro Hoshi, Shin-Ich Morita, Tsutomu Kanefuji, Takeshi Suda, Go Hasegawa, Shuji Terai
Background and study aims  We report a case series of 5 patients with collagenous colitis (CC) presenting with chronic watery diarrhea, who were subjected to magnifying, chromoendoscopy and narrow band imaging (NBI). Magnifying chromoendoscopy revealed whitish-clouded, honeycomb-like appearance at orifices of the crypts. NBI with high magnification revealed irregular caliber variation of the subepithelial capillary network. Presence of these features corresponded with histological characteristics of CC indicated by thickening of the subepithelial collagen layer...
November 2017: Endoscopy International Open
https://www.readbyqxmd.com/read/29247549/a-training-program-of-a-new-simplified-classification-of-magnified-narrow-band-imaging-for-superficial-esophageal-squamous-cell-carcinoma
#10
Wen-Lun Wang, Sherry Yueh-Hsia Chiu, Ching-Tai Lee, Cheng-Hao Tseng, Chien-Chuan Chen, Ming-Lun Han, Chen-Shuan Chung, Ping-Hsin Hsieh, Wei-Lun Chang, Ping-Hsiu Wu, Wen-Hung Hsu, Hsu-Heng Yen, Hsiu-Po Wang, Chi-Yang Chang
BACKGROUND: Optimal staging of the invasion depth of superficial esophageal squamous cell carcinoma (SESCC) is vital prior to endoscopic treatment. A new simplified magnified narrow-band imaging (M-NBI) classification system based on vascular architecture has recently been developed by the Japan Esophageal Society, however its validity remains uncertain. METHODS: A total of 11 experienced and 11 inexperienced endoscopists were invited to join an endoscopic training program, which was composed of pre-test, educational section, and post-test...
December 16, 2017: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/29237517/hypopharyngeal-cancer-associated-with-synchronous-oesophageal-cancer-risk-factors-and-benefits-of-image-enhanced-endoscopic-screening
#11
X-G Ni, Q-Q Zhang, J-Q Zhu, G-Q Wang
OBJECTIVES: To explore the risk factors associated with the occurrence of synchronous oesophageal cancer in patients with hypopharyngeal cancer, and to investigate the roles of image-enhanced endoscopic screening in the prediction and diagnosis of early oesophageal cancer. METHODS: The clinical characteristics of patients with hypopharyngeal cancer (n = 160) were analysed. All patients underwent laryngoscopic and gastroscopic examination using image-enhanced endoscopic techniques before treatment...
December 14, 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/29236769/creating-infinite-contrast-in-fluorescence-microscopy-by-using-lanthanide-centered-emission
#12
Miguel R Carro-Temboury, Riikka Arppe, Casper Hempel, Tom Vosch, Thomas Just Sørensen
The popularity of fluorescence microscopy arises from the inherent mode of action, where the fluorescence emission from probes is used to visualize selected features on a presumed dark background. However, the background is rarely truly dark, and image processing and analysis is needed to enhance the fluorescent signal that is ascribed to the selected feature. The image acquisition is facilitated by using considerable illumination, bright probes at a relatively high concentration in order to make the fluorescent signal significantly more intense than the background signal...
2017: PloS One
https://www.readbyqxmd.com/read/29233171/deep-infiltrating-ureteral-endometriosis-with-catamenial-hydroureteronephrosis-a-case-report
#13
Hyun Jung Lee, Yoon Soon Lee
BACKGROUND: This aim of this case report is to raise awareness of ureteral endometriosis in women of reproductive age with hydronephrosis in the absence of urolithiasis to enable early diagnosis and prevent loss of renal function. CASE PRESENTATION: A 44-year-old Asian woman presented with a 4-year history of cyclic right flank pain and right hydronephrosis during menstruation. Despite several evaluations by physicians, including gynecologists, the cause of her symptoms was not diagnosed...
December 13, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/29225083/computer-aided-diagnosis-for-identifying-and-delineating-early-gastric-cancers-in-magnifying-narrow-band-images
#14
Takashi Kanesaka, Tsung-Chun Lee, Noriya Uedo, Kun-Pei Lin, Huai-Zhe Chen, Ji-Yuh Lee, Hsiu-Po Wang, Hsuan-Ting Chang
BACKGROUND AND AIMS: Magnifying narrow-band imaging (M-NBI) is important in the diagnosis of early gastric cancers (EGCs), but requires expertise to master. We developed a computer-aided diagnosis (CADx) system to assist endoscopists in identifying and delineating EGCs. METHODS: We retrospectively collected and randomly selected 66 EGC M-NBI images and 60 non-cancer M-NBI images into a training set, and 61 EGC M-NBI images and 20 non-cancer M-NBI images into a test set...
December 7, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/29218321/visual-assessment-of-colorectal-flat-and-depressed-lesions-by-using-narrow-band-imaging
#15
Hiroshi Nakamura, Hiroaki Ikematsu, Shozo Osera, Renma Ito, Daiki Sato, Tatsunori Minamide, Naoki Okamoto, Yoichi Yamamoto, Takuya Hombu, Kenji Takashima, Keiichiro Nakajo, Tomohiro Kadota, Yusuke Yoda, Keisuke Hori, Yasuhiro Oono, Tomonori Yano
Background and study aims:  Visual assessment of laterally spreading tumors non-granular type (LST-NG) and depressed lesions by narrow band imaging (NBI) without magnification has not been studied. We investigated the role of non-magnifying NBI in detecting LST-NG and type IIc lesions on colonoscopy. Patients and methods:  This retrospective study examined consecutive patients diagnosed as having LST-NG and/or type IIc lesions in our hospital between August 2011 and July 2013...
December 2017: Endoscopy International Open
https://www.readbyqxmd.com/read/29216843/evaluation-of-the-visibility-of-early-gastric-cancer-using-linked-color-imaging-and-blue-laser-imaging
#16
Yoshikazu Yoshifuku, Yoji Sanomura, Shiro Oka, Mio Kurihara, Takeshi Mizumoto, Tomohiro Miwata, Yuji Urabe, Toru Hiyama, Shinji Tanaka, Kazuaki Chayama
BACKGROUND: Blue laser imaging (BLI) and linked color imaging (LCI) are the color enhancement features of the LASEREO endoscopic system, which provide a narrow band light observation function and expansion and reduction of the color information, respectively. METHODS: We examined 82 patients with early gastric cancer (EGC) diagnosed between April 2014 and August 2015. Five expert and 5 non-expert endoscopists retrospectively compared images obtained on non-magnifying BLI bright mode (BLI-BRT) and LCI with those obtained via conventional white light imaging (WLI)...
December 8, 2017: BMC Gastroenterology
https://www.readbyqxmd.com/read/29204429/acid-suppressive-therapy-improved-symptoms-due-to-circumferential-cervical-inlet-patch-with-proton-pumps-h-k-atpase
#17
Takanori Yamada, Atsushi Tsuji, Shunya Onoue, Masanao Kaneko, Fumihiko Tanioka, Satoshi Osawa, Yasuhiko Saida
Cervical inlet patch (CIP), also referred to as esophageal heterotopic gastric mucosa, is regarded as the residue of columnar epithelium of the embryonic esophagus. Narrow band imaging increases the detection rate of CIP. Herein, we present a 55-year-old man with symptomatic circumferential inlet patch. He exhibited globus and dysphagia, and esophagogastroduodenoscopy found cir-cumferential CIP, where im-munohistochemistry revealed the existence of pro-ton pumps (H+, K+-ATPase). His throat symptoms were relieved by acid suppressive therapy with pump inhibitors...
November 16, 2017: World Journal of Clinical Cases
https://www.readbyqxmd.com/read/29201332/an-improved-random-walker-with-bayes-model-for-volumetric-medical-image-segmentation
#18
Chunhua Dong, Xiangyan Zeng, Lanfen Lin, Hongjie Hu, Xianhua Han, Masoud Naghedolfeizi, Dawit Aberra, Yen-Wei Chen
Random walk (RW) method has been widely used to segment the organ in the volumetric medical image. However, it leads to a very large-scale graph due to a number of nodes equal to a voxel number and inaccurate segmentation because of the unavailability of appropriate initial seed point setting. In addition, the classical RW algorithm was designed for a user to mark a few pixels with an arbitrary number of labels, regardless of the intensity and shape information of the organ. Hence, we propose a prior knowledge-based Bayes random walk framework to segment the volumetric medical image in a slice-by-slice manner...
2017: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/29198695/-snowmelt-sign-and-corkscrew-microvessels-predicting-epithelium-regeneration-after-acute-rejection-of-small-bowel-transplantation-a-case-report
#19
C-S Chung, T-H Lee, C-T Chiu, Y Chen
Intestinal failure characterized by inadequate maintenance of nutrition via normal intestinal function comprises a group of disorders with many different causes. If parenteral nutrition dependency develops, which is associated with higher mortality and complications, it is considered for intestine transplantation. However, the graft failure rate is not low, and acute cellular rejection is one of the most important reasons for graft failure. As a result, early identification of rejection and timely modification of anti-rejection medications have been considered to be associated with better graft and patient survival rates...
December 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/29192642/importance-of-optical-diagnosis-in-early-gastric-cancer-a-case-report-of-early-gastric-signet-ring-cell-carcinoma
#20
P S Akabah, S Mocan, C Molnar, D Dobru
Gastric signet ring cell carcinoma (SRCC) is a rare form of highly malignant adenocarcinoma. It is an epithelial malignancy characterized by the histologic appearance of more than 50% of cells as signet ring cells filled with mucin. The incidence of SRCC is rising,[1],[2] therefore, the diagnosis of these cancers in the early stage is important as it is the only stage that curative measures can be done. A 49-year-old female was hospitalized due to epigastric pain, postprandial bloating for 3 months. Upper gastrointestinal endoscopy with narrow band imaging (NBI) showed 1...
October 2017: Nigerian Journal of Clinical Practice
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