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CC BY-NC-ND 4.0 · Endosc Int Open 2018; 06(12): E1423-E1430
DOI: 10.1055/a-0770-2700
Original article
Owner and Copyright © Georg Thieme Verlag KG 2018

Endoscopic ultrasound-guided through-the-needle microforceps biopsy in the evaluation of pancreatic cystic lesions: a multicenter study

Dennis Yang
1   Division of Gastroenterology and Hepatology, University of Florida, Gainesville, Florida, United States
,
Jason B. Samarasena
2   Division of Gastroenterology and Hepatology, University of California Irvine, Irvine, California, United States
,
Laith H. Jamil
3   Division of Digestive and Liver Diseases, Cedars Sinai Medical Center, Los Angeles, California, United States
,
Kenneth J. Chang
2   Division of Gastroenterology and Hepatology, University of California Irvine, Irvine, California, United States
,
David Lee
2   Division of Gastroenterology and Hepatology, University of California Irvine, Irvine, California, United States
,
Mel A. Ona
2   Division of Gastroenterology and Hepatology, University of California Irvine, Irvine, California, United States
,
Simon K. Lo
3   Division of Digestive and Liver Diseases, Cedars Sinai Medical Center, Los Angeles, California, United States
,
Srinivas Gaddam
3   Division of Digestive and Liver Diseases, Cedars Sinai Medical Center, Los Angeles, California, United States
,
Quin Liu
3   Division of Digestive and Liver Diseases, Cedars Sinai Medical Center, Los Angeles, California, United States
,
Peter V. Draganov
1   Division of Gastroenterology and Hepatology, University of Florida, Gainesville, Florida, United States
› Author Affiliations
Further Information

Publication History

submitted 08 May 2018

accepted after revision 24 July 2018

Publication Date:
05 December 2018 (online)

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Abstract

Background and study aims Accurate diagnosis and classification of pancreatic cysts (PCs) remains a challenge. The aims of this study were to: (1) evaluate the safety and technical success of a novel microforceps for EUS-guided through-the-needle biopsy (TTNB) of PCs; and (2) assess its diagnostic yield for mucinous PCs when compared to FNA cyst fluid analysis and cytology.

Patients and methods This was a multicenter retrospective analysis of 47 patients who underwent EUS-FNA and TTNB for PCs between January 2014 and June 2017. Technical success was defined as acquisition of a specimen adequate for cytologic or histological evaluation. Cyst fluid carcinoembryonic antigen (CEA) was used to initially categorize cysts as non-mucinous (CEA < 192 ng/mL) or mucinous (CEA ≥ 192 ng/mL). Final diagnosis was based on identifiable mucinous pancreatic cystic epithelium on cytology, microforceps histology and/or surgical histology when available.

Results Forty-seven patients with PCs (mean size 30.7 mm) were included. TTNB was successfully performed in 46 of 47 (97.9 %). Technical success was significantly lower with FNA (48.9 %) compared to TTNB (85.1 %) (P < .001). For cysts with insufficient amount of fluid for CEA (n = 19) or CEA < 192 ng/mL, the cumulative incremental diagnostic yield of a mucinous PC was significantly higher with TTNB vs. FNA (52.6 % vs 18.4 %; P = .004). TTNB alone (34.4 %) diagnosed more mucinous PCs than either CEA ≥ 192 ng/mL alone (6.3 %) or when combined with FNA cytology (9.4 %). One episode of self-limited bleeding (2.1 %) and one of pancreatitis (2.1 %) occurred.

Conclusions EUS-TTNB is safe and effective for evaluating PCs. TTNB may help increase the diagnostic yield of mucinous PCs.

 

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