scholarly journals Clinical outcomes of the “resect and discard” strategy using magnifying narrow-band imaging for small (< 10 mm) colorectal polyps

2018 ◽  
Vol 06 (12) ◽  
pp. E1382-E1389 ◽  
Author(s):  
Shigetsugu Tsuji ◽  
Yasuhito Takeda ◽  
Kunihiro Tsuji ◽  
Naohiro Yoshida ◽  
Kenichi Takemura ◽  
...  
Keyword(s):  
Narrow Band ◽  
Narrow Band Imaging ◽  
Colorectal Polyps ◽  
Low Grade ◽  
New Paradigm ◽  
Term Outcome ◽  
Clinical Records ◽  
The Cost ◽  
White Light Imaging

Abstract Background and study aim The “resect and discard” strategy is a new paradigm for the management of small colorectal polyps that reduces the cost and effort related to pathological diagnosis after polypectomy. This retrospective study aimed to clarify the clinical outcome of the “resect and discard” strategy for small colorectal polyps. Patients and methods The clinical records were reviewed from 501 consecutive patients who underwent the “resect and discard” strategy for colorectal polyps smaller than 10 mm at our hospital between January 2008 and December 2010. All colorectal lesions were evaluated onsite under magnifying narrow-band imaging after careful conventional white-light imaging. In cases of low grade adenoma predicted with high confidence, colonoscopists selected the “resect and discard” option without formal histopathology. The mid-term outcomes were evaluated to validate the curability of the “resect and discard” strategy. Results The present study included 501 consecutive patients with 816 lesions. The mid-term outcomes were examined for 476 (95 %) patients who received follow-up for at least 1 year after undergoing the “resect and discard” strategy. The median observation period was 83 months (range 12 – 117 months). No patient died from colorectal cancer related to the procedure, resulting in a disease-specific survival rate of 100 %. There were no local and/or distant recurrences detected during follow-up. Conclusions The “resect and discard” strategy for small colorectal polyps under strict preoperative diagnosis achieves excellent mid-term outcome.

Local recurrence of diminutive colorectal polyps after cold forceps polypectomy with jumbo forceps followed by magnified narrow-band imaging: a multicenter prospective study

Endoscopy ◽  
2019 ◽  
Vol 51 (03) ◽  
pp. 253-260 ◽  
Author(s):  
Toshio Kuwai ◽  
Takuya Yamada ◽  
Tatsuya Toyokawa ◽  
Hiroaki Iwase ◽  
Tomohiro Kudo ◽  
...  
Keyword(s):  
Local Recurrence ◽  
Recurrence Rate ◽  
Local Recurrence Rate ◽  
Narrow Band ◽  
Narrow Band Imaging ◽  
Therapeutic Option ◽  
Colorectal Polyps ◽  
Delayed Bleeding ◽  
Immediate Bleeding

Background Cold polypectomy has been increasingly used to remove diminutive colorectal polyps. We evaluated the local recurrence rate of diminutive polyps at the 1-year follow-up after cold forceps polypectomy (CFP). Methods In a prospective, multicenter, observational cohort study, patients with diminutive colorectal polyps ( ≤ 5 mm) were treated by CFP using jumbo forceps followed by magnified narrow-band imaging (NBI). Patients were assessed for local recurrence at 1-year follow-up. Risk factors associated with local recurrence were analyzed using logistic regression analysis. Results Overall, 955 lesions were resected in 471 patients who completed the 1-year follow-up. The endoscopic complete resection rate was 99.4 %. Immediate and delayed bleeding occurred in 0.8 % and 0.2 % of cases, respectively, with no perforations observed. Local recurrence occurred in 2.1 % of cases at the 1-year follow-up. Univariable analyses indicated that polyps > 3 mm (P < 0.01) and immediate bleeding (P = 0.04) were significantly associated with local recurrence. A trend was observed for patients ≥ 65 years (P = 0.06) and fractional resection (P = 0.09). Multivariable analyses confirmed that lesions > 3 mm were significantly associated with local recurrence (odds ratio 3.4, P = 0.02). Conclusions CFP with jumbo forceps followed by NBI-magnified observation had a low local recurrence rate and is an acceptable therapeutic option for diminutive colorectal polyps. Although we recommend limiting the use of CFP with jumbo forceps to polyps ≤ 3 mm in size, future comparative studies are needed to make recommendations on cold polypectomy using either forceps or snares as the preferred approach for diminutive polyp resection.

scholarly journals TXI (Texture and Color Enhancement Imaging) for Serrated Colorectal Lesions

2021 ◽  
Vol 11 (1) ◽  
pp. 119
Author(s):  
Toshihiro Nishizawa ◽  
Osamu Toyoshima ◽  
Shuntaro Yoshida ◽  
Chie Uekura ◽  
Ken Kurokawa ◽  
...  
Keyword(s):  
Narrow Band ◽  
Narrow Band Imaging ◽  
Colorectal Polyps ◽  
Serrated Polyps ◽  
Serrated Lesions ◽  
Surface Patterns ◽  
Visibility Score ◽  
Color Enhancement ◽  
Image Enhancing ◽  
White Light Imaging

Background and aim: Olympus Corporation released the texture and color enhancement imaging (TXI) technology as a novel image-enhancing endoscopic technique. We investigated the effectiveness of TXI in the imaging of serrated colorectal polyps, including sessile serrated lesions (SSLs). Methods: Serrated colorectal polyps were observed using white light imaging (WLI), TXI, narrow-band imaging (NBI), and chromoendoscopy with and without magnification. Serrated polyps were histologically confirmed. TXI was compared with WLI, NBI, and chromoendoscopy for the visibility of the lesions without magnification and for that of the vessel and surface patterns with magnification. Three expert endoscopists evaluated the visibility scores, which were classified from 1 to 4. Results: Twenty-nine consecutive serrated polyps were evaluated. In the visibility score without magnification, TXI was significantly superior to WLI but inferior to chromoendoscopy in the imaging of serrated polyps and the sub-analysis of SSLs. In the visibility score for vessel patterns with magnification, TXI was significantly superior to WLI and chromoendoscopy in the imaging of serrated polyps and the sub-analysis of SSLs. In the visibility score for surface patterns with magnification, TXI was significantly superior to WLI but inferior to NBI in serrated polyps and in the sub-analysis of SSLs and hyperplastic polyps. Conclusions: TXI provided higher visibility than did WLI for serrated, colorectal polyps, including SSLs.

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 Current Clinical Applications of Magnifying Endoscopy with Narrow Band Imaging in the Stomach

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Hai-Yan Li ◽  
Zhi-Zheng Ge ◽  
Mitsuhiro Fujishiro ◽  
Xiao-Bo Li
Keyword(s):  
Evaluation Method ◽  
Narrow Band ◽  
Narrow Band Imaging ◽  
Clinical Applications ◽  
Magnifying Endoscopy ◽  
Surface Pattern ◽  
Microvascular Architecture ◽  
Therapeutic Decision Making ◽  
Valuable Role

Narrow band imaging (NBI), in conjunction with magnifying endoscopy (ME), has arisen more and more attention in the area of advanced endoscopy. By enhancing the mucosal microvascular architecture and surface pattern, it is feasible to use ME-NBI to identify subtle changes associated with gastric inflammation, atrophy, intestinal metaplasia, and early gastric cancer. The new technique thus plays a valuable role in therapeutic decision-making, endoscopic treatment process, postoperative evaluation, and follow-up examination. To date, many criteria or evaluation method of ME-NBI has been proposed. This paper aims to summarize the various diagnosing classifications and the current clinical applications of ME-NBI in the stomach.

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.

УЗКОПОЛОСНАЯ ВИЗУАЛИЗАЦИЯ ПРИ РАКЕ МОЧЕВОГО ПУЗЫРЯ / NARROW BAND IMAGING FOR BLADDER CANCER

2021 ◽  
pp. 137-146
Author(s):  
David Sargsyan ◽  
Ruben Boroyan
Keyword(s):  
Bladder Cancer ◽  
Treatment Outcome ◽  
Large Scale ◽  
Narrow Band ◽  
Positive Impact ◽  
Narrow Band Imaging ◽  
New Technology ◽  
Invasive Bladder Cancer ◽  
Real Cost

Узкополосная визуализация (NBI) – это недавно разработанная технология, цель которой – предоставить дополнительную эндоскопическую информацию пациентам с раком мочевого пузыря. Этот обзор посвящен диагностической точности и результату лечения с использованием цистоскопии NBI для лечения немышечного инвазивного рака мочевого пузыря. Текущие результаты показали улучшенную чувствительность цистоскопии NBI по сравнению с обычной цистоскопией в белом свете, хотя при использовании цистоскопии NBI сообщалось о более низкой специфичности и повышенном количестве ложноположительных результатов. Результаты лечения с использованием технологии NBI при трансуретральной резекции опухоли мочевого пузыря оказали положительное влияние, в то время как сообщалось о снижении количества остаточных опухолей и рецидивов опухоли при последующем наблюдении. В будущем применение технологии NBI может усовершенствовать протокол лечения и последующего наблюдения у пациентов с немышечно-инвазивным раком мочевого пузыря. / Narrow band imaging (NBI) is a newly developed technology aiming to provide additional endoscopic information for patients with bladder cancer. This review focuses on the diagnostic accuracy and treatment outcome using NBI cystoscopy for the treatment of nonmuscle invasive bladder cancer. Current results showed improved sensitivity of NBI cystoscopy compared to conventional white light cystoscopy, although lower specificity and increased false positive results were reported using NBI cystoscopy. The treatment outcome using NBI technology in transurethral resection of bladder tumor had a positive impact while decreased number of residual tumors and tumor recurrence at follow-up were reported. In the future, the application of NBI technology might refine the treatment and follow-up protocol in patients with non-muscle invasive bladder cancer. However, these large scale prospective studies are required to confirm the real cost-effectiveness of this new technology.

scholarly journals Magnification endoscopy in combination with acetic acid enhancement and narrow-band imaging for the accurate diagnosis of colonic neoplasms

2020 ◽  
Vol 08 (04) ◽  
pp. E488-E497
Author(s):  
Kotaro Shibagaki ◽  
Norihisa Ishimura ◽  
Takafumi Yuki ◽  
Hideaki Taniguchi ◽  
Masahito Aimi ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Diagnostic Accuracy ◽  
Endoscopic Resection ◽  
Narrow Band ◽  
Narrow Band Imaging ◽  
Colonic Neoplasms ◽  
High Accuracy ◽  
Colorectal Polyps ◽  
Histologic Diagnosis ◽  
Magnification Endoscopy

Abstract Background and study aims Magnification endoscopy with narrow-band imaging (NBIME) and NBIME with acetic acid enhancement (A-NBIME) enable visualization of the vascular and microstructural patterns of colorectal polyp. We compared the diagnostic accuracy and reproducibility of white light endoscopy (WLE), NBIME, and A-NBIME for predictive histologic diagnosis. Patients and methods Consecutive colorectal polyps (N = 628; 38 hyperplasias, 488 adenomas, 72 M-SM1 cancers, and 30 SM2 cancers) were photographed with WLE, NBIME, and A-NBIME. Endoscopic images were independently reviewed by three experts, according to the traditional criteria for WLE, the Japan NBI Expert Team classification for NBIME, and pit pattern classification for A-NBIME to compare diagnostic accuracy and interobserver diagnostic agreement among modalities. Results The specificity (95 % confidence interval) of hyperplasia and SM2 cancer with WLE were 98.2 % (96.8 %–99.1%) and 99.4 % (98.5 %–99.9 %), respectively, showing high accuracy for endoscopic resection without magnifying observation. Diagnostic accuracy of WLE, NBIME, and A-NBIME was 80.8 % (77.4 %–83.8 %), 79.3 % (75.9 %–82.4 %), and 86.1 % (83.2 %–88.7 %), respectively, showing the highest accuracy for A-NBIME among modalities (P < .05). NBIME showed a lower PPV for M-SM1 cancer (P < .05), as with WLE (P = .08) compared to A-NBIME. Fleiss’s kappa values for WLE, NBIME, and A-NBIME diagnosis were 0.43 (0.39 – 0.46), 0.52 (0.49 – 0.56) and 0.65 (0.62 – 0.69), respectively, showing insufficient reproducibility of WLE and superiority of A-NBIME among modalities. Conclusion WLE showed high accuracy for endoscopic resection of colorectal polyps in expert diagnosis. NBIME demonstrated a higher diagnostic reproducibility than WLE. A-NBIME showed possible superiority among modalities in both diagnostic accuracy and reproducibility.

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