Core biopsy needle versus standard aspiration needle for endoscopic ultrasound-guided sampling of solid pancreatic masses: a randomized parallel-group study

Yun Nah Lee; Jong Ho Moon; Hee Kyung Kim; Hyun Jong Choi; Moon Han Choi; Dong Choon Kim; Tae Hoon Lee; Sang-Woo Cha; Young Deok Cho; Sang-Heum Park

doi:10.1055/s-0034-1377558

Endoscopy, Table of Contents

Endoscopy 2014; 46(12): 1056-1062
DOI: 10.1055/s-0034-1377558

Original article

Core biopsy needle versus standard aspiration needle for endoscopic ultrasound-guided sampling of solid pancreatic masses: a randomized parallel-group study

Yun Nah Lee

¹Digestive Disease Center and Research Institute, Department of Internal Medicine, SoonChunHyang University School of Medicine, Bucheon and Seoul, Korea

,

Jong Ho Moon

¹Digestive Disease Center and Research Institute, Department of Internal Medicine, SoonChunHyang University School of Medicine, Bucheon and Seoul, Korea

,

Hee Kyung Kim

²Department of Pathology, SoonChunHyang University School of Medicine, Bucheon, Korea

,

Hyun Jong Choi

¹Digestive Disease Center and Research Institute, Department of Internal Medicine, SoonChunHyang University School of Medicine, Bucheon and Seoul, Korea

,

Moon Han Choi

¹Digestive Disease Center and Research Institute, Department of Internal Medicine, SoonChunHyang University School of Medicine, Bucheon and Seoul, Korea

,

Dong Choon Kim

¹Digestive Disease Center and Research Institute, Department of Internal Medicine, SoonChunHyang University School of Medicine, Bucheon and Seoul, Korea

,

Tae Hoon Lee

¹Digestive Disease Center and Research Institute, Department of Internal Medicine, SoonChunHyang University School of Medicine, Bucheon and Seoul, Korea

,

Sang-Woo Cha

¹Digestive Disease Center and Research Institute, Department of Internal Medicine, SoonChunHyang University School of Medicine, Bucheon and Seoul, Korea

,

Young Deok Cho

¹Digestive Disease Center and Research Institute, Department of Internal Medicine, SoonChunHyang University School of Medicine, Bucheon and Seoul, Korea

,

Sang-Heum Park

¹Digestive Disease Center and Research Institute, Department of Internal Medicine, SoonChunHyang University School of Medicine, Bucheon and Seoul, Korea

› Author Affiliations

Abstract

Background and study aims: An endoscopic ultrasound (EUS)-guided fine needle biopsy (EUS-FNB) device using a core biopsy needle was developed to improve diagnostic accuracy by simultaneously obtaining cytological aspirates and histological core samples. We prospectively compared the diagnostic accuracy of EUS-FNB with standard EUS-guided fine needle aspiration (EUS-FNA) in patients with solid pancreatic masses.

Patients and methods: Between January 2012 and May 2013, consecutive patients with solid pancreatic masses were prospectively enrolled and randomized to undergo EUS-FNB using a core biopsy needle or EUS-FNA using a standard aspiration needle at a single tertiary center. The specimen was analyzed by onsite cytology, Papanicolaou-stain cytology, and histology. The main outcome measure was diagnostic accuracy for malignancy. The secondary outcome measures were: the median number of passes required to establish a diagnosis, the proportion of patients in whom the diagnosis was established with each pass, and complication rates.

Results: The overall accuracy of combining onsite cytology with Papanicolaou-stain cytology and histology was not significantly different for the FNB (n = 58) and FNA (n = 58) groups (98.3 % [95 %CI 94.9 % – 100 %] vs. 94.8 % [95 %CI 91.9 % – 100 %]; P = 0.671). Compared with FNA, FNB required a significantly lower median number of needle passes to establish a diagnosis (1.0 vs. 2.0; P < 0.001). On subgroup analysis of 111 patients with malignant lesions, the proportion of patients in whom malignancy was diagnosed on the first pass was significantly greater in the FNB group (72.7 % vs. 37.5 %; P < 0.001).

Conclusions: The overall accuracy of FNB and FNA in patients with solid pancreatic masses was comparable; however, fewer passes were required to establish the diagnosis of malignancy using FNB.

This study was registered on the UMIN Clinical Trial Registry (UMIN000014057).

Full Text

References

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