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Seigo Nakatani 1 Article
Stereomicroscopic on-site evaluation in endoscopic ultrasound-guided tissue acquisition of upper gastrointestinal subepithelial lesions
Seigo Nakatani, Kosuke Okuwaki, Masafumi Watanabe, Hiroshi Imaizumi, Tomohisa Iwai, Takaaki Matsumoto, Rikiya Hasegawa, Hironori Masutani, Takahiro Kurosu, Akihiro Tamaki, Junro Ishizaki, Ayana Ishizaki, Mitsuhiro Kida, Chika Kusano
Clin Endosc 2024;57(1):89-95.   Published online April 18, 2023
Graphical AbstractGraphical Abstract AbstractAbstract PDFPubReaderePub
/Aims: In stereomicroscopic sample isolation processing, the cutoff value (≥4 mm) of stereomicroscopically visible white cores indicates high diagnostic sensitivity. We aimed to evaluate endoscopic ultrasound-guided tissue acquisition (EUS-TA) using a simplified stereomicroscopic on-site evaluation of upper gastrointestinal subepithelial lesions (SELs).
In this multicenter prospective trial, we performed EUS-TA using a 22-gauge Franseen needle in 34 participants with SELs derived from the upper gastrointestinal muscularis propria, requiring pathological diagnosis. The presence of stereomicroscopically visible white core (SVWC) in each specimen was assessed using stereomicroscopic on-site evaluation. The primary outcome was EUS-TA’s diagnostic sensitivity with stereomicroscopic on-site evaluation based on the SVWC cutoff value (≥4 mm) for malignant upper gastrointestinal SELs.
The total number of punctures was 68; 61 specimens (89.7%) contained stereomicroscopically visible white cores ≥4 mm in size. The final diagnoses were gastrointestinal stromal tumor, leiomyoma, and schwannoma in 76.5%, 14.7%, and 8.8% of the cases, respectively. The sensitivity of EUS-TA with stereomicroscopic on-site evaluation based on the SVWC cutoff value for malignant SELs was 100%. The per-lesion accuracy of histological diagnosis reached the highest level (100%) at the second puncture.
Stereomicroscopic on-site evaluation showed high diagnostic sensitivity and could be a new method for diagnosing upper gastrointestinal SELs using EUS-TA.


Citations to this article as recorded by  
  • What method can we choose if rapid on-site evaluation is not available for the endoscopic ultrasound-guided tissue acquisition of upper gastrointestinal subepithelial lesions?
    Yu Kyung Cho
    Clinical Endoscopy.2024; 57(1): 53.     CrossRef
  • Endoscopic Ultrasound-Guided Tissue Acquisition Using Fork-Tip Needle for Subepithelial Lesions: A Single-Center Validation Study
    Masafumi Watanabe, Kosuke Okuwaki, Tomohisa Iwai, Mitsuhiro Kida, Hiroshi Imaizumi, Kai Adachi, Akihiro Tamaki, Junro Ishizaki, Taro Hanaoka, Chika Kusano
    Digestive Diseases and Sciences.2024;[Epub]     CrossRef
  • An Esophageal Leiomyoma with Cystic Degeneration Mimicking a Malignant Neoplasm
    Gwang Ha Kim, Dong Chan Joo, Moon Won Lee, Bong Eun Lee, Kyungbin Kim
    The Ewha Medical Journal.2023;[Epub]     CrossRef
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