Surgical Endoscopy

, Volume 31, Issue 12, pp 5143–5149 | Cite as

Diagnostic yield of small histological cores obtained with a new EUS-guided fine needle biopsy system

  • Takuya Ishikawa
  • Rachid Mohamed
  • Steven J. Heitman
  • Christian Turbide
  • Puja R. Kumar
  • Hidemi Goto
  • Yoshiki Hirooka
  • Paul J. Belletrutti



As endoscopic ultrasound-guided tissue acquisition techniques evolve, there is increasing interest in obtaining optimal histological samples to improve diagnostic accuracy. In this study, we aimed to assess the tissue acquisition success rate and test performance characteristics of a novel endoscopic ultrasound-guided fine needle biopsy (EUS-FNB) system.


We performed a retrospective review of consecutive patients undergoing EUS-guided tissue sampling of solid lesions using the SharkCore fine needle system in a tertiary referral facility. At least two passes were submitted for histology and diagnostic accuracy was evaluated. Comparison standard was based on final surgical pathology or minimum six-month clinical follow-up.


Seventy-nine patients underwent 85 EUS-FNB procedures. Of the 85 histology specimens, 78 (91.7%) were adequate for diagnostic examination (includes six atypical/suspicious for adenocarcinoma). The sensitivity, specificity, and accuracy for diagnosis of malignancy with FNB were 87.1, 100, and 90.6%, respectively. Cytology was simultaneously sent in 43 cases with the same needle in addition to histology. Out of the 14 cases that were atypical/suspicious for adenocarcinoma or non-diagnostic on cytology, 11 cases (78.6%) achieved definite diagnoses on histology. The overall sensitivity, specificity, and accuracy for diagnosis of malignancy combining histology and cytology were 90.3, 100, and 92.9%, respectively. No complications were reported after the procedures.


In this initial experience with a new EUS-guided FNB system, obtaining small cores to submit for histological analysis was safe, technically feasible, and highly accurate. Most of the histological cores obtained via FNB yielded a definite diagnosis including in cases with equivocal cytomorphology. Further study is required to confirm these findings.


Endosonography Image-guided biopsy Biopsy, Fine-needle Pathology, Surgical 


Authors' contributions

Conception and design: TI and PJB; analysis and interpretation of the data: TI and PJB; drafting of the article: TI, PJK, and PJB; critical revision of the article for important intellectual content: SJH, RM CT, HG, and YH; final approval of the article: TI, RM, SJH, and PJB.

Compliance with ethical standards


Drs. Takuya Ishikawa, Rachid Mohamed, Steven J Heitman, Christian Turbide, Puja R. Kumar, Hidemi Goto, Yoshiki Hirooka, and Paul J. Belletrutti have no conflicts of interest or financial ties to disclose.


There is no funding for this paper.


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Copyright information

© Springer Science+Business Media New York 2017

Authors and Affiliations

  • Takuya Ishikawa
    • 1
    • 2
  • Rachid Mohamed
    • 1
  • Steven J. Heitman
    • 1
  • Christian Turbide
    • 1
  • Puja R. Kumar
    • 1
  • Hidemi Goto
    • 2
  • Yoshiki Hirooka
    • 3
  • Paul J. Belletrutti
    • 1
  1. 1.Division of Gastroenterology and Hepatology, Department of MedicineUniversity of CalgaryCalgaryCanada
  2. 2.Department of Gastroenterology and HepatologyNagoya University Graduate School of MedicineNagoyaJapan
  3. 3.Department of EndoscopyNagoya University HospitalNagoyaJapan

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