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Kazuyuki Matsumoto 2 Articles
Diagnostic Ability of Convex-Arrayed Endoscopic Ultrasonography for Major Vascular Invasion in Pancreatic Cancer
Yuki Fujii, Kazuyuki Matsumoto, Hironari Kato, Yosuke Saragai, Saimon Takada, Sho Mizukawa, Shinichiro Muro, Daisuke Uchida, Takeshi Tomoda, Shigeru Horiguchi, Noriyuki Tanaka, Hiroyuki Okada
Clin Endosc 2019;52(5):479-485.   Published online May 16, 2019
AbstractAbstract PDFPubReaderePub
/Aims: This study aimed to examine the diagnostic ability of endoscopic ultrasonography (EUS) for major vascular invasion in pancreatic cancer and to evaluate the relationship between EUS findings and pathological distance.
In total, 57 consecutive patients who underwent EUS for pancreatic cancer before surgery were retrospectively reviewed. EUS image findings were divided into four types according to the relationship between the tumor and major vessel (types 1 and 2: invasion, types 3 and 4: non-invasion). We also compared the EUS findings and pathologically measured distances between the tumors and evaluated vessels.
The sensitivity, specificity, and accuracy of EUS diagnosis for vascular invasion were 89%, 92%, and 91%, respectively, in the veins and 83%, 94%, and 93%, respectively, in the arteries. The pathologically evaluated distances of cases with type 2 EUS findings were significantly shorter than those of cases with type 3 EUS findings in both the major veins (median [interquartile range], 96 [0–742] µm vs. 2,833 [1,076–5,694] µm, p=0.012) and arteries (623 [0–854] µm vs. 3,097 [1,396–6,000] µm, p=0.0061). All cases with a distance of ≥1,000 µm between the tumors and main vessels were correctly diagnosed.
Tumors at a distance ≥1,000 µm from the main vessels were correctly diagnosed by EUS.


Citations to this article as recorded by  
  • Role of Endoscopic Ultrasound in Staging and Vascular Assessment of Pancreatic Cancer
    Mohammed A El-Nady, Khalid A Ead, Mustafa A Haridy, Nour Shaheen, Abdulqadir J Nashwan, Saad R Abdelwahid, Mohammed F Mohammed, Omran Mohamed, Safwat S Sawy, Emad Abdelrazzak, Amro M Hassan
    Cureus.2024;[Epub]     CrossRef
  • The diagnostic accuracy of endoscopic ultrasound vs. contrast-enhanced computed tomography in local staging of pancreatic adenocarcinoma: a bi-national multicenter study
    Wisam Sbeit, Mahmoud Salman, Abed Khalaileh, Ahmad Zoabi, Zakhar Bramnik, David Hovel, Mahmud Mahamid, Eran Israeli, Lior Katz, Reem Khoury, Nama Mubariki, Andrea Lisotti, Halim Awadie, Tawfik Khoury
    European Journal of Gastroenterology & Hepatology.2023; 35(9): 974.     CrossRef
  • Role of Endoscopic Ultrasound in Diagnosis of Pancreatic Ductal Adenocarcinoma
    Abhirup Chatterjee, Jimil Shah
    Diagnostics.2023; 14(1): 78.     CrossRef
  • The expanding role of endoscopic ultrasound elastography
    Jahnvi Dhar, Jayanta Samanta
    Clinical Journal of Gastroenterology.2022; 15(5): 841.     CrossRef
  • Experience of introduction of endoscopic ultrasonography into daily clinical practice in a surgical hospital
    A.V. Zhdanov, E.G. Solonitsyn, E.A. Korymasov
    Endoskopicheskaya khirurgiya.2020; 26(5): 24.     CrossRef
  • Endoscopic Ultrasonography for Vascular Invasion in Pancreatic Cancer
    Seong-Hun Kim
    Clinical Endoscopy.2019; 52(5): 397.     CrossRef
  • 5,126 View
  • 116 Download
  • 5 Web of Science
  • 6 Crossref
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A “Back Light System” for Identification of Sites for Endoscopic Ultrasound-Guided Fine-Needle Aspiration in Solid Pancreatic Masses: A Prospective, Randomized Study with a Crossover Design
Ryo Harada, Hironari Kato, Soichiro Fushimi, Hirofumi Inoue, Daisuke Uchida, Yutaka Akimoto, Takeshi Tomoda, Kazuyuki Matsumoto, Yasuhiro Noma, Naoki Yamamoto, Shigeru Horiguchi, Koichiro Tsutsumi, Hiroyuki Okada
Clin Endosc 2019;52(4):334-339.   Published online May 16, 2019
AbstractAbstract PDFPubReaderePub
/Aims: We applied a back light system (BLS) with a magnifying glass to improve the ability to assess the adequacy of specimen sampling using endosonography. We conducted this study to evaluate the efficacy of the BLS in sampling of specimens by endoscopic ultrasound-guided fine needle aspiration of solid pancreatic masses.
This was a prospective, randomized, crossover, single-center clinical trial. An endosonographer evaluated adequacy on gross visual inspection and identified whitish specimen sampling sites with and without the BLS according to a randomization sequence in the first and second passes with a 25-G needle. On cytological evaluation, the presence of well-defined pancreatic ductal epithelium was evaluated by a cytopathologist who was blinded to any clinical information.
A total of 80 consecutive patients were eligible during the study period. Adequacy was observed for 52 specimens (65%) with the BLS and 54 (68%) without the BLS (p=0.88). In assessment of specimen adequacy on gross examination, only fair agreement was observed both with and without BLS (kappa score 0.40 and 0.29, respectively).
The BLS did not influence the ability to identify specimen sampling sites or reliable assessment of specimen site adequacy using gross visual inspection.


Citations to this article as recorded by  
  • Tissue processing of endoscopic ultrasound-guided fine-needle aspiration specimens from solid pancreatic lesions
    Kenji Notohara, Kaori Nakamura
    Journal of Medical Ultrasonics.2024; 51(2): 261.     CrossRef
  • Macroscopic qualitative evaluation of solid pancreatic lesion specimens from endoscopic ultrasound-guided fine needle aspiration/biopsies
    Kaori Nakamura, Kenji Notohara, Ryoji Nishizaki, Etsuji Ishida, Midori Sato, Akemi Kodera, Junya Itakura, Motowo Mizuno
    Pancreatology.2023; 23(8): 1028.     CrossRef
  • Unfortunately, a “Back Light System” As a Global Positioning System Failed to Guide the Route in 25-G Fine-Needle Aspiration
    Rungsun Rerknimitr, Phonthep Angsuwatcharakon
    Clinical Endoscopy.2019; 52(4): 295.     CrossRef
  • 4,361 View
  • 81 Download
  • 5 Web of Science
  • 3 Crossref
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