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  • Title: Novel biopsy forceps for diagnosis of biliary tract diseases during endoscopic retrograde cholangiopancreatography: a prospective comparative study with 90° adjustable and conventional biopsy forceps.
    Author: Ishii K, Itoi T, Sofuni A, Itokawa F, Tsuchiya T, Kurihara T, Tsuji S, Ikeuchi N, Umeda J, Moriyasu F.
    Journal: Hepatogastroenterology; 2012; 59(117):1350-3. PubMed ID: 22094996.
    Abstract:
    BACKGROUND/AIMS: Recently, controllable biopsy forceps (MTW, D°sseldorf, Germany) have been developed. This biopsy forceps were 90° adjustable. In the present study, the feasibility and efficacy of the controllable biopsy forceps were compared with those of conventional biopsy forceps in patients with biliary tract disease. METHODOLOGY: A total of 27 patients with biliary tract lesions were enrolled. We evaluated the procedure time, the sample tissue size and the diagnostic accuracy. In addition, the physicians performing the procedure rated their impressions about operability into 3 classes: excellent, fair and poor. RESULTS: The sensitivity in distinguishing benign from malignant lesions was 71.4% (15/21) for the 90° adjustable type and 66.7% (14/21) for the conventional type. The accuracy rate was 77.8% (21/27) for the 90° adjustable type and 74.0% (20/27) for the conventional type. In terms of operability as rated by each physician, the 'excellent' rate was given more frequently to the 90° adjustable type 25.9% than for the conventional type 11.1% (p=0.047). CONCLUSIONS: This preliminary study showed that controllable biopsy forceps compared to conventional type biopsy forceps, despite a larger diameter, enables biopsy in a similar procedure time and its ease of use was rated better.
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