scholarly journals Evaluation of image-enhanced endoscopic technology using advanced diagnostic endoscopy for the detection of early gastric cancer: a pilot study

2017 ◽  
Vol 05 (09) ◽  
pp. E825-E833 ◽  
Author(s):  
Daisuke Yamaguchi ◽  
Shinya Kodashima ◽  
Mitsuhiro Fujishiro ◽  
Satoshi Ono ◽  
Keiko Niimi ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Early Gastric Cancer ◽  
Detection Rate ◽  
Blue Laser ◽  
Color Variation ◽  
Detection Rates ◽  
Diagnostic Endoscopy ◽  
Screening Endoscopy ◽  
Significant Difference ◽  
Upper Gastrointestinal

Abstract Background and study aims Image-enhanced endoscopy (IEE) plays an important role in early detection and detailed examination of early gastric cancer (EGC). The current study aimed to clarify the efficacy of IEE using advanced diagnostic endoscopy for EGC detection without magnification. Patients and methods We performed endoscopic examinations without magnification in patients referred to our hospital with a diagnosis of upper gastrointestinal tumor detected through routine screening endoscopy. In this study, we used three IEE technologies: narrow-band imaging; blue laser imaging; and i-scan optical enhancement. The detection rates for EGC between IEE and white-light imaging (WLI) were compared. Results Between July 2013 and June 2014, 156 patients were enrolled. Among upper gastrointestinal tumors, we analyzed endoscopic examination results of 119 lesions that were histologically diagnosed as EGC in 109 patients. The EGC detection rate in the IEE plus WLI groups was 77.3 %. Although the EGC detection rate in the IEE group was higher than that in the WLI group (80.0 % vs. 70.3 %), there was no significant difference between these two modalities. An important detection factor using IEE was tumor circumference, where the rate of detection in the anterior wall and lesser curvature was significantly higher than that in the posterior wall and greater curvature (P = 0.046). An important detection factor using WLI was color variation, where the rate of occurrence of a reddened or pale tumor was significantly higher than that of normal colored tumors (P = 0.030). Conclusions The detection rate of EGC without magnification was similar between the IEE group and the WLI group. Important detection factors differed between IEE and WLI; therefore, the IEE and WLI modalities have different characteristics regarding EGC detection. Consequently, we propose to use both IEE and WLI in the evaluation of EGC.

Blue laser imaging-bright improves the real-time detection rate of early gastric cancer: a randomized controlled study

2019 ◽  
Vol 89 (1) ◽  
pp. 47-57 ◽  
Author(s):  
Osamu Dohi ◽  
Nobuaki Yagi ◽  
Yuji Naito ◽  
Akifumi Fukui ◽  
Yasuyuki Gen ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Early Gastric Cancer ◽  
Real Time ◽  
Detection Rate ◽  
Blue Laser ◽  
Controlled Study ◽  
Laser Imaging ◽  
The Real ◽  
Randomized Controlled ◽  
Blue Laser Imaging

The effect of photo-documentation of the ampulla on neoplasm detection rate during esophagogastroduodenoscopy

Endoscopy ◽  
2018 ◽  
Vol 51 (02) ◽  
pp. 115-124 ◽  
Author(s):  
Jae Park ◽  
Chul-Hyun Lim ◽  
Yu Cho ◽  
Bo-In Lee ◽  
Young-Seok Cho ◽  
...  
Keyword(s):  
Detection Rate ◽  
First Year ◽  
Detection Rates ◽  
Upper Gi ◽  
Asymptomatic Patients ◽  
Examination Time ◽  
Significant Difference ◽  
Photo Documentation ◽  
The Mean ◽  
Upper Gastrointestinal

Abstract Background A few studies have investigated quality indicators of esophagogastroduodenoscopy (EGD) for identifying upper gastrointestinal (GI) malignancy. The current study aimed to evaluate whether the rate of ampulla photo-documentation could be associated with the detection of upper GI neoplasms. Methods We used data from 111 962 asymptomatic patients who underwent EGD performed by 14 endoscopists at a health promotion center. The rate of ampulla photo-documentation was calculated by reviewing EGD photos archived during each endoscopist’s first year of working at the center. The detection of neoplasms during a 7-year period was investigated. We examined the association between the rate of ampulla photo-documentation and the rate of neoplasm detection. Results The mean rate of ampulla photo-documentation was 49.0 % (range 13.7 % – 78.1 %) during endoscopists’ first year of working at the center. Endoscopists’ rates of ampulla photo-documentation significantly correlated with the detection of total neoplasms (R2 = 0.57, P = 0.03) and small neoplasms (R2 = 0.58, P = 0.03). There was a significant difference in the detection rates of upper GI neoplasms between high (n = 7) and low (n = 7) ampulla observers (odds ratio [OR] 1.31, 95 % confidence interval [CI] 1.03 – 1.68; P = 0.03). The ampulla photo-documentation rate of each endoscopist significantly correlated with the examination time for a normal EGD (R2 = 0.55; P = 0.04). In multivariate analysis, high ampulla photo-documentation rate was a predictor of neoplasm detection (OR 1.33, 95 %CI 1.03 – 1.70). Conclusions The ampulla photo-documentation rate was significantly associated with the detection rate for both total and small upper GI neoplasms. Ampulla photo-documentation should be considered as a quality indicator of EGD.

Quality indicator for esophagogastroduodenoscopy in screening gastric cancer.

2014 ◽  
Vol 32 (3_suppl) ◽  
pp. 25-25
Author(s):  
Yong Chan Lee ◽  
Chan Hyuk Park ◽  
Hyun Soo Chung ◽  
Hyuk Lee ◽  
Jun Chul Park ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Cancer Screening ◽  
Quality Indicators ◽  
Detection Rate ◽  
Quality Score ◽  
Gastric Neoplasm ◽  
Detection Rates ◽  
Gastric Diverticulum ◽  
Screening Endoscopy ◽  
Subepithelial Lesion

25 Background: The national gastric cancer screening program including endoscopy has been introduced in Korea in which the high incidence of gastric cancer have been reported. The good quality indicators of screening endoscopy for gastric cancer are mandatory to improve the detection rate. However, most quality indicators were focused on the standardization of an endoscopy unit rather than the individual assessment of endoscopists for cancer screening ability. We aimed to identify quality-assessment indicators associated with screening gastric cancer. Methods: The database records for 54,889 subjects who underwent esophagogastroduodenoscopy (EGD) for screening purpose at the Yonsei University Severance Hospital Health Promotion Center, Seoul, Korea between February 2006 and July 2013 were analyzed. All the endoscopists (n=66) involved in this study were experienced endoscopists who performed 1,000 or more EGDs. The detection rate of early gastric neoplasm according to endoscopists were assessed. The detection rates of various gastric lesions other than gastric epithelial neoplasms were also analyzed. The scoring formula for predicting the qualified endoscopists was proposed and analyzed. Results: Of the enrolled subjects, mean age was 48 years and the percentage of males was 59.7%. The percentage of gastric dysplasia, early gastric cancer, and advanced gastric cancer was 0.18%, 0.10%, and 0.04%, respectively. Most frequently detected lesions were gastric erosions (22.30%) followed by atrophic gastritis and intestinal metaplasia. In multivariate analysis, the detection rates of gastric subepithelial lesion or gastric diverticulum were independent associate factors with early gastric neoplasm detection. Cochran-Armitage trend test confirmed that higher quality score group was associated with significant higher early gastric neoplasm detection rate. Conclusions: The detection rates of gastric subepithelial lesion or gastric diverticulum are well correlated with early gastric neoplasm detection. the proposed quality score formula can be a good indicator assessing endoscopist's ability to detect early gastric neoplasm.

scholarly journals Quality management system for screening esophagogastroduodenoscopy improves detection of Helicobacter pylori-negative interval gastric cancer

2021 ◽  
Vol 09 (12) ◽  
pp. E1900-E1908
Author(s):  
Fumiaki Ishibashi ◽  
Konomi Kobayashi ◽  
Tomohiro Kawakami ◽  
Ryu Tanaka ◽  
Kazuaki Sugihara ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Helicobacter Pylori ◽  
Cancer Screening ◽  
Quality Management ◽  
Early Gastric Cancer ◽  
Detection Rate ◽  
Quality Management System ◽  
Detection Rates ◽  
Cancer Group ◽  
Gastric Cancer Screening

Abstract Background and study aims Double-checking the findings of examinations is necessary for endoscopy quality control in gastric cancer screening; however, there have been no reports showing its effectiveness. We prospectively analyzed the effectiveness of a quality management system (QMS) in endoscopy for gastric cancer screening. Patients and methods QMS was defined as having images and reports checked by a second endoscopist on the same day and reporting inconsistencies to the examining endoscopist. Patients diagnosed with early gastric cancer (EGC) in the 2 years before and after the introduction of QMS were divided into two groups: the interval cancer group, which included those for whom cancer was detected within 1 year of the last endoscopy and the noninterval cancer group. Changes in detection rates were compared. Results Before the introduction of QMS, 11 interval EGC cases were diagnosed among 36,189 endoscopies, whereas after the introduction, 32 interval ECG cases were diagnosed among 38,290 endoscopies (P = 0.004). Fifteen noninterval EGC cases were diagnosed before the introduction, while 12 noninterval EGC cases were diagnosed after the introduction; no significant difference was observed. Subanalyses by Helicobacter pylori (HP) infection status revealed no difference in the detection rate among HP-positive EGC patients, but the detection rates among HP-eradicated and HP-naïve EGC patients were improved (P = 0.005 and P = 0.011). Logistic regression analysis showed that QMS was an independent predictor for detection of HP-negative interval EGC (P = 0.017, OR = 4.4, 95 % CI: 2.0–9.7). Conclusions QMS improved the detection rate for HP-negative interval early gastric cancer. (UMIN000042991)

272 Blue LASER Imaging-Bright Improves Real-Time Detection Rate of Early Gastric Cancer

2015 ◽  
Vol 81 (5) ◽  
pp. AB132 ◽  
Author(s):  
Osamu Dohi ◽  
Atsushi Majima ◽  
Yuriko Onozawa ◽  
Tomoko Kitaichi ◽  
Yusuke Horii ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Early Gastric Cancer ◽  
Real Time ◽  
Detection Rate ◽  
Blue Laser ◽  
Laser Imaging ◽  
Blue Laser Imaging ◽  
Real Time Detection

Magnifying Blue Laser Imaging versus Magnifying Narrow-Band Imaging for the Diagnosis of Early Gastric Cancer: A Prospective, Multicenter, Comparative Study

Digestion ◽  
2017 ◽  
Vol 96 (3) ◽  
pp. 127-134 ◽  
Author(s):  
Osamu Dohi ◽  
Nobuaki Yagi ◽  
Shigeto Yoshida ◽  
Shoko Ono ◽  
Yoji Sanomura ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Early Gastric Cancer ◽  
Comparative Study ◽  
Narrow Band ◽  
Narrow Band Imaging ◽  
Blue Laser ◽  
Laser Imaging ◽  
Blue Laser Imaging

scholarly journals Blue Laser Imaging with a Small-Caliber Endoscope Facilitates Detection of Early Gastric Cancer

2019 ◽  
Vol 52 (3) ◽  
pp. 273-277 ◽  
Author(s):  
Haruo Takahashi ◽  
Yoshimasa Miura ◽  
Hiroyuki Osawa ◽  
Takahito Takezawa ◽  
Yuji Ino ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Early Gastric Cancer ◽  
Blue Laser ◽  
Laser Imaging ◽  
Blue Laser Imaging

scholarly journals MRI-directed biopsy for primary detection of prostate cancer in a population of 223 men: MRI In-Bore vs MRI-transrectal ultrasound fusion-targeted techniques

2021 ◽  
Author(s):  
Maurizio Del Monte ◽  
Stefano Cipollari ◽  
Francesco Del Giudice ◽  
Martina Pecoraro ◽  
Marco Bicchetti ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Detection Rate ◽  
Transrectal Ultrasound ◽  
Focal Therapy ◽  
Malignant Cells ◽  
Median Percentage ◽  
Detection Rates ◽  
Biopsy Core ◽  
Significant Difference ◽  
Chi Squared

Objectives: To compare the detection rates of overall prostate cancer (PCa) and clinically significant PCa (csPCa) and the median percentage of cancer per biopsy core between MRI-guided In-bore and MRI-TRUS fusion-targeted biopsy (TBx). Methods: In this retrospective study, 223 patients who underwent prostate multiparametric MRI (mpMRI) and subsequent MR-directed biopsy were included. For PCa and csPCa detection rate (DR), contingency tables were tested via the Pearson’s chi-squared to explore the variance of the outcome distribution. The percentage of cancer per biopsy core was tested with a two-tailed Mann-Withney test. Results: One hundred and seventeen and 106 patients underwent MRI-TRUS fusion or MRI In-bore TBx, respectively. 402 MRI biopsy targets were identified, of which 206 (51.2%) were biopsied with the MRI-TRUS TBx and 196 (48.8%) with the MRI In-bore TBx technique. Per-patient PCa and csPCa detection rates were 140/223 (62.8%) and 97/223 (43.5%), respectively. PCa-DR was 73/117 (62.4%) and 67/106 (63.2%) for MRI-TRUS and MRI In-Bore TBx (p = 0.9), while csPCa detection rate reached 50/117 (42.7%) and 47/106 (44.3%), respectively (p = 0.81). The median per-patient percentage of malignant tissue within biopsy cores was 50% (IQR: 27–65%) for PCa and 60% (IQR: 35–68%) for csPCa, with a statistically significant difference between the techniques. Conclusion No statistically significant difference in the detection rate of MRI In-bore and MRI-TRUS fusion TBx was found. MRI In-bore TBx showed higher per-core percentage of malignant cells. Advances in knowledge MRI In-bore biopsy might impact risk stratification and patient management considering the higher per-core percentage of malignant cells, especially for patients eligible for active surveillance or focal therapy.

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