Diagnostic performance of routine esophagogastroduodenoscopy using magnifying endoscope with narrow‐band imaging for gastric cancer

2017 ◽  
Vol 30 (1) ◽  
pp. 71-78 ◽  
Author(s):  
Shoichi Yoshimizu ◽  
Yorimasa Yamamoto ◽  
Yusuke Horiuchi ◽  
Masami Omae ◽  
Toshiyuki Yoshio ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Diagnostic Performance ◽  
Narrow Band ◽  
Narrow Band Imaging ◽  
Magnifying Endoscope

Combined use of a magnifying endoscope with a narrow band imaging system and a multibending endoscope for en bloc EMR of early stage gastric cancer

2004 ◽  
Vol 60 (1) ◽  
pp. 79-84 ◽  
Author(s):  
Kazuki Sumiyama ◽  
Mitsuru Kaise ◽  
Takashi Nakayoshi ◽  
Masayuki Kato ◽  
Takahiro Mashiko ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Imaging System ◽  
Narrow Band ◽  
Narrow Band Imaging ◽  
Early Stage ◽  
En Bloc ◽  
Combined Use ◽  
Magnifying Endoscope

scholarly journals Additive Effects of Evaluating Micro-Surface and Microvascular Patterns Using Magnifying Endoscopy with Narrow-Band Imaging for Gastric Cancer

2021 ◽  
Author(s):  
Yusuke Horiuchi ◽  
Toshiaki Hirasawa ◽  
Naoki Ishizuka ◽  
Junki Tokura ◽  
Mitsuaki Ishioka ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Diagnostic Accuracy ◽  
Diagnostic Performance ◽  
Evaluation Method ◽  
Narrow Band ◽  
Narrow Band Imaging ◽  
Magnifying Endoscopy ◽  
Additive Effects ◽  
Surface Patterns ◽  
Microvascular Pattern

Abstract No studies have compared the performance of microvascular and micro-surface patterns alone with their combination in magnifying endoscopy with narrow-band imaging for diagnosing gastric cancer. This study aimed to clarify the difference in diagnostic performance between these methods. Thirty-three participating endoscopists underwent specialized training in magnifying endoscopy evaluated microvascular and micro-surface patterns for images of 106 cancerous and 106 non-cancerous cases. If classified as “irregular”, the lesion was diagnosed as cancerous. To evaluate diagnostic performance, we compared the diagnostic accuracy, sensitivity, and specificity among the methods. Performance-related items did not significantly differ between the microvascular and micro-surface patterns. However, the diagnostic accuracy and sensitivity were significantly higher when using the combination of these methods than when using the microvascular pattern alone (percentage [95% confidence interval]: 82.1% [76.4–86.7] vs. 76.4% [70.3–81.6], P = 0.0005; and 69.8% [60.5–77.8] vs. 63.2% [53.7–71.8], P = 0.0082, respectively). The additive effects on diagnostic accuracy and sensitivity were 5.7% and 6.6%, respectively. The combination of micro-surface and microvascular patterns has superior diagnostic accuracy and sensitivity for diagnosing gastric cancer than the evaluation method using microvascular pattern alone. Our results may contribute to improving the diagnosis of gastric cancers.

Endoscopic submucosal dissection by using Clutch cutter and IT knife 2 for early gastric cancer with severe submucosal fibrosis: a case report

MedPharmRes ◽  
2018 ◽  
Vol 2 (3) ◽  
pp. 17-21
Author(s):  
Nhan Le ◽  
Phuong Vien ◽  
Nghia Le
Keyword(s):  
Gastric Cancer ◽  
Early Gastric Cancer ◽  
Endoscopic Submucosal Dissection ◽  
Narrow Band ◽  
Narrow Band Imaging ◽  
Magnifying Endoscopy ◽  
Gastrointestinal Cancers ◽  
Pathological Result ◽  
Well Differentiated ◽  
Submucosal Fibrosis

Introduction: Gastric cancer is one of the highly malignant gastrointestinal cancers and the third leading cause of cancer death. In the last decade, early gastric cancer (EGC) has been reported by using narrow-band imaging (NBI) magnifying endoscopy. Advances in endoscopic techniques, such as endoscopic submucosal dissection (ESD), have enabled the en bloc resection of these EGC. Although ESD is performed for early gastric cancer, there are still many difficult problems in technique of this procedure. The difficulty of gastric ESD depends on the size and location of a tumor, presence of severe submucosal fibrosis, presence of ulceration... We report a case of our successful ESD by using Clutch cutter and IT knife 2 in treatment of EGC with severe submucosal fibrosis. Case presentation: A 62-year-old man felt an epigastric discomfort two months ago. The narrow-band imaging (NBI) magnifying endoscopy revealed a suspected early gastric cancer type 0 - IIa + IIc (Japanese classification of early gastrointestinal cancers) at the incisura angularis, the size of this lesion was 15 mm in diameter, and pathological result of endoscopic biopsy was a well-differentiated adenocarcinoma. ESD was performed and we found there was severe submucosal fibrosis which was dissected safer and faster by using Clutch cutter and IT knife 2. There were no complications such as severe bleeding and perforation. The size of resected specimen was 60 x 35 mm and the time of procedure was 150 minutes. After ESD, the pathological result was a well differentiated adenocarcinoma, pT1a, UL(-), LY(-), V(-), no cancer cell in vertical and horizontal margins. The healing time of ESD-induced ulcer was 5 weeks without local recurrence. Conclusion: Through this case, we aim to emphasize the importance of using Clutch cutter and IT knife 2 as a modified technique which makes ESD a safe procedure in treatment of EGC with severe submucosal fibrosis.

Sign in / Sign up

Export Citation Format

Share Document