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Taku Sakamoto 3 Articles
Clinical Applications of Linked Color Imaging and Blue Laser/Light Imaging in the Screening, Diagnosis, and Treatment of Superficial Colorectal Tumors
Taku Sakamoto, Hourin Cho, Yutaka Saito
Clin Endosc 2021;54(4):488-493.   Published online July 14, 2021
DOI: https://doi.org/10.5946/ce.2021.157
AbstractAbstract PDFPubReaderePub
Considering its contribution to reducing colorectal cancer morbidity and mortality, the most important task of colonoscopy is to find all existing polyps. Moreover, the accurate detection of existing polyps determines the risk of colorectal cancer morbidity and is an important factor in deciding the appropriate surveillance program for patients. Image-enhanced endoscopy is an easy-to-use modality with improved lesion detection. Linked color imaging (LCI) and blue laser/light imaging (BLI) are useful modalities for improving colonoscopy quality. Each mode has unique optical features; therefore, their intended use differs. LCI contributes to improved polyp detection due to its brightness and high color contrast between the lesion and normal mucosa, while BLI contributes to the characterization of detected polyps by evaluating the vessel and surface patterns of detected lesions. The proper use of these observation modes allows for more efficient endoscopic diagnosis. Moreover, recent developments in artificial intelligence will soon change the clinical practice of colonoscopy and this system will provide an efficient education modality for novice endoscopists.

Citations

Citations to this article as recorded by  
  • Endoscopic features with associated histological and molecular alterations in serrated polyps with dysplasia: Retrospective analysis of a tertiary case series
    Antonello Trecca, Raffaele Borghini, Daniela Medicina, Rachele Del Sordo, Giulio Mandelli, Antonino Bella, Giuseppe Galloro, Kuang-I Fu, Vincenzo Villanacci
    Digestive and Liver Disease.2024; 56(4): 687.     CrossRef
  • Linked-color imaging with or without artificial intelligence for adenoma detection: a randomized trial
    Kazuya Miyaguchi, Yoshikazu Tsuzuki, Nobutaka Hirooka, Hisashi Matsumoto, Hideki Ohgo, Hidetomo Nakamoto, Hiroyuki Imaeda
    Endoscopy.2024; 56(05): 376.     CrossRef
  • The Diagnostic Performance of Linked Color Imaging Compared to White Light Imaging in Endoscopic Diagnosis of Helicobacter pylori Infection: A Systematic Review and Meta-Analysis
    Jae Gon Lee, In Kyung Yoo, Abdullah Ozgur Yeniova, Sang Pyo Lee
    Gut and Liver.2024; 18(3): 444.     CrossRef
  • Linked color imaging improves the diagnostic accuracy of eosinophilic esophagitis
    Yasuhiko Abe, Yu Sasaki, Makoto Yagi, Naoko Mizumoto, Yusuke Onozato, Takashi Kon, Masakuni Shoji, Kazuhiro Sakuta, Takayuki Sakai, Matsuki Umehara, Minami Ito, Shuhei Nakamura, Hidemoto Tsuchida, Yoshiyuki Ueno
    DEN Open.2023;[Epub]     CrossRef
  • Comparison of LED and LASER Colonoscopy About Linked Color Imaging and Blue Laser/Light Imaging of Colorectal Tumors in a Multinational Study
    Naohisa Yoshida, Peter V. Draganov, Sneha John, Helmut Neumann, Rafiz Abdul Rani, Wen-Hsin Hsu, Nilesh Fernandopulle, Kewin Tien Ho Siah, Ricardo Morgenstern, Yuri Tomita, Ken Inoue, Osamu Dohi, Ryohei Hirose, Yoshito Itoh, Takaaki Murakami, Yoshikazu Ina
    Digestive Diseases and Sciences.2023; 68(10): 3943.     CrossRef
  • Classification and endoscopic diagnosis of colorectal polyps
    Ji Hyun Kim, Sung Chul Park
    Journal of the Korean Medical Association.2023; 66(11): 633.     CrossRef
  • Role of linked color imaging for upper gastrointestinal disease: present and future
    Sang Pyo Lee
    Clinical Endoscopy.2023; 56(5): 546.     CrossRef
  • Detecting colorectal lesions with image-enhanced endoscopy: an updated review from clinical trials
    Mizuki Nagai, Sho Suzuki, Yohei Minato, Fumiaki Ishibashi, Kentaro Mochida, Ken Ohata, Tetsuo Morishita
    Clinical Endoscopy.2023; 56(5): 553.     CrossRef
  • Images of laser and light‐emitting diode colonoscopy for comparing large colorectal lesion visibility with linked color imaging and white‐light imaging
    Naohisa Yoshida, Yoshikazu Hayashi, Hiroshi Kashida, Yuri Tomita, Osamu Dohi, Ken Inoue, Ryohei Hirose, Yoshito Itoh, Masahiro Okada, Shiori Yoshimoto, Toshihiro Fujinuma, Hirotsugu Sakamoto, Keijiro Sunada, Yoriaki Komeda, Ikue Sekai, Natsuki Okai, Hiron
    Digestive Endoscopy.2022; 34(7): 1413.     CrossRef
  • 3,880 View
  • 146 Download
  • 8 Web of Science
  • 9 Crossref
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Reduced Intravenous Fluorescein Dose for Upper and Lower Gastrointestinal Tract Probe-Based Confocal Laser Endomicroscopy
Kazuya Inoki, Seiichiro Abe, Yusaku Tanaka, Koji Yamamoto, Daisuke Hihara, Ryoji Ichijima, Yukihiro Nakatani, HsinYu Chen, Hiroyuki Takamaru, Masau Sekiguchi, Masayoshi Yamada, Taku Sakamoto, Satoru Nonaka, Haruhisa Suzuki, Shigetaka Yoshinaga, Ichiro Oda, Takahisa Matsuda, Yutaka Saito
Clin Endosc 2021;54(3):363-370.   Published online September 8, 2020
DOI: https://doi.org/10.5946/ce.2020.058
AbstractAbstract PDFPubReaderePub
Background
/Aims: Probe-based confocal laser endomicroscopy (pCLE) requires the administration of intravenous (IV) fluorescein. This study aimed to determine the optimal dose of IV fluorescein for both upper and lower gastrointestinal (GI) tract pCLE.
Methods
Patients 20 to 79 years old with gastric high-grade dysplasia (HGD) or colorectal neoplasms (CRNs) were enrolled in the study. The dose de-escalation method was employed with five levels. The primary endpoint of the study was the determination of the optimal dose of IV fluorescein for pCLE of the GI tract. The reduced dose was determined based on off-line reviews by three endoscopists. An insufficient dose of fluorescein was defined as the dose of fluorescein with which the pCLE images were not deemed to be visible. If all three endoscopists determined that the tissue structure was visible, the doses were de-escalated.
Results
A total of 12 patients with gastric HGD and 12 patients with CRNs were enrolled in the study. Doses were de-escalated to 0.5 mg/kg of fluorescein for both non-neoplastic duodenal and colorectal mucosa. All gastric HGD or CRNs were visible with pCLE with IV fluorescein at 0.5 mg/kg.
Conclusions
In the present study, pCLE with IV fluorescein 0.5 mg/kg was adequate to visualize the magnified structure of both the upper and lower GI tract.

Citations

Citations to this article as recorded by  
  • Precision endoscopy in colorectal polyps' characterization and planning of endoscopic therapy
    Francesco Vito Mandarino, Silvio Danese, Toshio Uraoka, Adolfo Parra‐Blanco, Yasuharu Maeda, Yutaka Saito, Shin‐Ei Kudo, Michael J. Bourke, Marietta Iacucci
    Digestive Endoscopy.2024;[Epub]     CrossRef
  • 4,643 View
  • 105 Download
  • 1 Web of Science
  • 1 Crossref
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Efficacy of hemostasis by gastroduodenal covered metal stent placement for hemorrhagic duodenal stenosis due to pancreatobiliary cancer invasion: a retrospective study
Yasunari Sakamoto, Taku Sakamoto, Akihiro Ohba, Mitsuhito Sasaki, Shunsuke Kondo, Chigusa Morizane, Hideki Ueno, Yutaka Saito, Yasuaki Arai, Takuji Okusaka
Received June 18, 2023  Accepted January 15, 2024  Published online February 20, 2024  
DOI: https://doi.org/10.5946/ce.2023.155
AbstractAbstract PubReaderePub
Background
/Aims: Advanced pancreatic and biliary tract cancers can invade the duodenum and cause duodenal hemorrhagic stenosis. This study aimed to evaluate the efficacy of covered self-expandable metal stents in the treatment of cancer-related duodenal hemorrhage with stenosis.
Methods
Between January 2014 and December 2016, metal stents were placed in 51 patients with duodenal stenosis. Among these patients, a self-expandable covered metal stent was endoscopically placed in 10 patients with hemorrhagic duodenal stenosis caused by pancreatobiliary cancer progression. We retrospectively analyzed the therapeutic efficacy of the stents by evaluating the technical and clinical success rates based on successful stent placement, degree of oral intake, hemostasis, stent patency, and overall survival.
Results
The technical and clinical success rates were 100%. All 10 patients achieved a Gastric Outlet Obstruction Scoring System score of three within two weeks after the procedure and had no recurrence of melena. The median stent patency duration and overall survival after stent placement were 52 days (range, 20–220 days) and 66.5 days (range, 31–220 days), respectively.
Conclusions
Endoscopic placement of a covered metal stent for hemorrhagic duodenal stenosis associated with pancreatic or biliary tract cancer resulted in duodenal hemostasis, recanalization, and improved quality of life.
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