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Diagnostic Ability of Endoscopic Bile Cytology Using a Newly Designed Biliary Scraper for Biliary Strictures

by Watanabe, Tsunamasa , Morita, Nozomi , Nakahara, Kazunari , Morita, Ryo , Otsubo, Takehito , Michikawa, Yosuke , Suetani, Keigo , Itoh, Fumio , Matsumoto, Nobuyuki , Tsuji, Kensuke , Ikeda, Hiroki , Sato, Junya , Matsunaga, Kotaro , Kobayashi, Shinjiro

in Bile / Biopsy / Cellular biology / Endoscopy / Medical diagnosis / Pancreatic cancer

2019

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Diagnostic Ability of Endoscopic Bile Cytology Using a Newly Designed Biliary Scraper for Biliary Strictures

in Bile / Biopsy / Cellular biology / Endoscopy / Medical diagnosis / Pancreatic cancer

2019

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Diagnostic Ability of Endoscopic Bile Cytology Using a Newly Designed Biliary Scraper for Biliary Strictures

in Bile / Biopsy / Cellular biology / Endoscopy / Medical diagnosis / Pancreatic cancer

2019

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Journal Article

Diagnostic Ability of Endoscopic Bile Cytology Using a Newly Designed Biliary Scraper for Biliary Strictures

Watanabe, Tsunamasa,

Morita, Nozomi,

Nakahara, Kazunari,

Morita, Ryo,

Otsubo, Takehito,

Michikawa, Yosuke,

Suetani, Keigo,

Itoh, Fumio,

Matsumoto, Nobuyuki,

Tsuji, Kensuke,

Ikeda, Hiroki,

Sato, Junya,

Matsunaga, Kotaro,

Kobayashi, Shinjiro

2019

Overview

BackgroundA new device with metallic wires for scrape cytology was developed.AimsTo compare the diagnostic performance of scrape cytology and conventional cytology during endoscopic retrograde cholangiopancreatography for biliary strictures.MethodsA total of 420 cases with biliary stricture underwent transpapillary bile cytology. Among them, there are 79 cases with scrape cytology using the new device (scrape group) and 341 cases with conventional cytology (control group). Seventy-two and 174 cases underwent biliary biopsy at the same time as bile cytology in the scrape and control group, respectively.ResultsThe sensitivity for malignancy of bile cytology in the scrape and control group was 41.2% [pancreatic cancer (PC): 23.1%, biliary cancer (BC): 52.5%] and 27.1% (PC: 16.3%, BC: 38.0%), respectively (P = 0.023). When analyzed PC and BC, respectively, there was no significant difference between the two groups. In the both groups, the sensitivity was significantly higher for BC than PC. In the scrape group, there was no difference in the sensitivity between cytology and biopsy [39.7% (PC: 17.4%, BC: 55.3%)], but in the control group, a significantly lower sensitivity was observed with cytology than biopsy (36.4% (PC: 19.7%, BC: 50.0%)) (P = 0.046). When analyzed PC and BC, respectively, there was no significant difference between cytology and biopsy. The sensitivity of combined cytology and biopsy was 55.6% (PC: 30.4%, BC: 71.1%) in the scrape group and 47.0% (PC: 24.6%, BC: 64.3%) in the control group.ConclusionScrape bile cytology for biliary strictures may be superior to conventional cytology.

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Publisher

Springer Nature B.V

Subject

/ Biopsy