Prospective evaluation of the performances of narrow-band imaging flexible videoscopy relative to white-light imaging flexible videoscopy, in patients scheduled for transurethral resection of a primary NMIBC

2018 ◽  
Vol 37 (8) ◽  
pp. 1615-1621 ◽  
Author(s):  
Lars Peder Dalgaard ◽  
Reza Zare ◽  
Josep M. Gaya ◽  
Joan Palou Redorta ◽  
Mathieu Roumiguié ◽  
...  
Keyword(s):  
White Light ◽  
Transurethral Resection ◽  
Narrow Band ◽  
Narrow Band Imaging ◽  
Prospective Evaluation ◽  
White Light Imaging

scholarly journals Evaluating Laryngopharyngeal Tumor Extension Using Narrow Band Imaging Versus Conventional White Light Imaging

2021 ◽  
Author(s):  
Manon A. Zwakenberg ◽  
Gyorgy B. Halmos ◽  
Jan Wedman ◽  
Bernard F. A. M. Laan ◽  
Boudewijn E. C. Plaat
Keyword(s):  
White Light ◽  
Narrow Band ◽  
Narrow Band Imaging ◽  
Tumor Extension ◽  
White Light Imaging

scholarly journals P236 Evaluation of histological inflammation by a novel image enhanced endoscopy technique, dual red imaging, in patients with ulcerative colitis: Preliminary study

2020 ◽  
Vol 14 (Supplement_1) ◽  
pp. S261-S261
Author(s):  
K FUJIMOTO ◽  
K Watanabe ◽  
K Hori ◽  
K Kaku ◽  
N Kinoshita ◽  
...  
Keyword(s):  
Ulcerative Colitis ◽  
White Light ◽  
Narrow Band ◽  
Narrow Band Imaging ◽  
Topical Steroid ◽  
Treatment Goal ◽  
Practical Approach ◽  
Mayo Score ◽  
White Light Imaging ◽  
Pathological Assessment

Abstract Background Endoscopic remission is the ideal treatment goal for patients with ulcerative colitis (UC) in clinical practice. However, several recent investigations tried to evaluate histological healing as a more optimal treatment goal. The assessment of histological healing, however, is usually inconvenient and time-consuming because of the requirement of a biopsy and pathological assessment. Dual red imaging (DRI; Olympus Corporation, Japan) is a novel image enhanced endoscopy technique that can visualise the inflammation, including that in the surface crypt, and vessel findings of the brownish surface or green-coloured deeper layer of the mucosa in contrast to narrow band imaging. We preliminarily evaluated the utility of DRI in the assessment of histological healing in UC as a practical approach. Methods We enrolled UC patients who provided consent from May 2018 to September 2019 in our hospital, and performed colonoscopy in the entire colon with white-light imaging and DRI, and then endoscopic pictures and biopsy samples were obtained. Central pathological assessment of histological inflammation based on the Nancy index with individual items was performed for each biopsy sample. We also assessed the clinical background, UC activity according to the Mayo score, white-light endoscopic activity according to the Mayo endoscopic subscore (MES), and DRI findings using a 5-point scale. Results We evaluated a total of 90 sets of DRI and pathological findings from 47 UC patients (20 females; median age, 42 [20–84] years; 25 with pancolitis, 17 left-sided colitis, 3 proctitis, and 2 others; median duration of disease, 83 [1–379] months; median Mayo score, 2 [0–11]). Participants were treated with 5-aminosalicylates (38 oral; 7 topical), steroid (4 systemic; 6 topical), immunomodulator (7), anti-TNF agents (5), tofacitinib (3), and tacrolimus (8). Both the MES (r = 0.70) and DRI scale (r = 0.65) correlated well with the Nancy index. Among individual pathological items with respect to inflammation, ulceration (r = 0.69), chronic inflammatory infiltrate (r = 0.66), neutrophils in the lamina propria (r = 0.65), and serrated architectural abnormalities (r = 0.60) correlated well with the Nancy index in contrast to other pathological items. DRI seemed to facilitate the visualisation of histological inflammation in deeper layers of the mucosa compared with white-light imaging or narrow-band imaging. Conclusion The novel DRI technique has potential in the evaluation of histological inflammation without the requirement of a biopsy in patients with UC as a practical approach. A further prospective multicenter study in this regard is needed.

scholarly journals Usefulness of narrow-band imaging in transurethral resection of bladder tumor: Early experience from a tertiary center in India

2019 ◽  
Vol 08 (04) ◽  
pp. 226-228
Author(s):  
Kanuj Malik ◽  
Anand Raja ◽  
Sivakumar Mahalingam ◽  
L.S Ravishankar
Keyword(s):  
White Light ◽  
Transurethral Resection ◽  
Bladder Tumor ◽  
Narrow Band ◽  
Narrow Band Imaging ◽  
Urinary Bladder Cancer ◽  
Early Experience ◽  
Current Standard ◽  
Tertiary Center ◽  
Long Term Follow Up

Abstract Background: The current standard for diagnosis and treatment of urinary bladder cancer is transurethral resection of bladder tumor (TURBT) using white light guidance. Narrow band imaging (NBI) has emerged as a promising method for identifying additional bladder lesions. Various studies have been published to evaluate its sensitivity in identifying new lesions and its impact on decreasing recurrences. In this study, we evaluated our early experience using NBI in TURBTs. Aims and Objective: The aim of the study is to determine the accuracy of NBI in identifying additional malignant lesions during TURBT. Materials and Methods: We retrospectively collected data for all patients who underwent either TURBT or repeat TURBT with white light and NBI from November 2016 to July 2017 at Cancer Institute (WIA). The number of additional lesions identified using NBI was evaluated along with its correlation with the final histopathology. Results: Forty patients were analysed of which 20 underwent TURBT and 20 underwent repeat TURBT. Of these, 36 patients had complete resection of tumour. Additional lesions were detected in 6 patients (14%) by NBI of which 2 (33%) were malignant histology. The additional lesions detected were carcinoma in situ and no patient was upstaged. Conclusion: The inclusion of NBI to conventional white light TURBT increases the sensitivity for identifying additional lesions. The limitation of NBI is high false positivity and its availability. Long term follow up studies with larger subset of patients are required to evaluate its role in decreasing recurrences and justification in routine clinical practice.

Narrow band imaging in the diagnosis of bladder schistosomiasis

2020 ◽  
Vol 13 (4) ◽  
pp. e233929
Author(s):  
Joachim Jimie ◽  
Margaret Lyttle
Keyword(s):  
White Light ◽  
Narrow Band ◽  
Narrow Band Imaging ◽  
Urinary Schistosomiasis ◽  
Detailed Evaluation ◽  
Characteristic Features ◽  
First Time ◽  
Urine Microscopy ◽  
White Light Imaging ◽  
Multiple Episodes

A 23-year-old man presented to us with multiple episodes of visible haematuria associated with dysuria, but no other symptoms suggestive of infection. His physical examination was completely unremarkable. On detailed evaluation of history, it was noted that he was treated for urinary schistosomiasis as a child in Sudan. A diagnostic flexible cystoscopy, with both white light and narrow band imaging (NBI), was done among other tests as a further diagnostic tool to investigate possible causes. This revealed the characteristic features of bladder schistosomiasis. Urine microscopy for Schistosoma haematobium eggs was negative, and this could have caused the diagnosis to be missed. He was treated with praziquantel for chronic bladder schistosomiasis. This is the first time that the use of NBI as an adjunct to white light imaging in the diagnosis of bladder schistosomiasis has been reported.

scholarly journals Visualization of Laterally Spreading Colorectal Tumors by Using Image-Enhanced Endoscopy

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Naoto Tamai ◽  
Yutaka Saito ◽  
Taku Sakamoto ◽  
Takeshi Nakajima ◽  
Takahisa Matsuda ◽  
...  
Keyword(s):  
White Light ◽  
Narrow Band ◽  
Narrow Band Imaging ◽  
Indigo Carmine ◽  
Autofluorescence Imaging ◽  
Colorectal Tumors ◽  
White Light Imaging ◽  
Experienced Endoscopists ◽  
Laterally Spreading Tumors

Laterally spreading tumors may sometimes evade detection by colonoscopy. This study aimed to evaluate the use of image-enhanced endoscopy for visualizing laterally spreading tumors of the nongranular type. We reviewed consecutive patients with 47 non-granular-type laterally spreading tumors that had been examined using white-light imaging, autofluorescence imaging, narrow-band imaging, and chromoendoscopy with indigo carmine. The quality of visualization was evaluated using a 5-point scale by less- and more-experienced endoscopists. Autofluorescence imaging provided significantly better visualization than white-light imaging for both less-experienced and experienced endoscopists. On the other hand, no significant differences were observed between the quality of visualization provided by white-light imaging and narrow-band imaging for less-experienced endoscopists. Autofluorescence imaging provides high-quality visualization of non-granular-type laterally spreading tumors on still images. Multicenter trials should be conducted to confirm the usefulness of autofluorescence imaging in detecting laterally spreading colorectal tumors.

Sign in / Sign up

Export Citation Format

Share Document