Applications of Cholangiopancreatoscopy in Pancreaticobiliary Diseases

Recent advances in imaging technology provide improved direct visualization of the common bile duct (CBD) and pancreatic duct (PD) using small caliber endoscopes and thus allow a wide array of therapeutic interventions. This chapter will review the technique of cholangiopancreatoscopy (CP), indications, effectiveness, and complications as well as the current commercially available options. We will discuss various methods of diagnostic and therapeutic cholangioscopy such as intraductal tissue sampling and biopsy in patients with indeterminate biliary strictures along with its role in the management of difficult bile duct stones. Finally, we will also analyze the role of pancreatoscopy in the evaluation of suspected neoplasms of the pancreas, assessment of pancreatic duct (PD) strictures, and in the treatment of pancreatic duct stones

A multicenter evaluation of a new EUS core biopsy needle: Experience in 200 patients.

Background and Objectives: We present a multicenter study of a new endoscopic ultrasound-guided fine-needle biopsy (EUS-FNB) needle (Acquire, Boston Scientific, Natick, MA). The aim of the study was to analyze the needle\u27s clinical performance when sampling solid lesions and to assess the safety of this device. Methods: We performed a multicenter retrospective study of patients undergoing EUS-FNB during July 1-November 15, 2016. Results: Two hundred patients (121 males and 79 females) underwent EUS-FNB of solid lesions with the Acquire needle. Lesions included solid pancreatic masses (n = 109), adenopathy (n = 45), submucosal lesions (n = 34), cholangiocarcinoma (n = 8), liver lesions (n = 6), and other (n = 8). Mean lesion size was 30.6 mm (range: 3-100 mm). The mean number of passes per target lesion was 3 (range: 1-7). Rapid onsite cytologic evaluation (ROSE) by a cytologist was performed in all cases. Tissue obtained by EUS-FNB was adequate for evaluation and diagnosis by ROSE in 197/200 cases (98.5%). Data regarding the presence or absence of a core of tissue obtained after EUS-FNB were available in 145/200 procedures. In 131/145 (90%) of cases, a core of tissue was obtained. Thirteen out of 200 patients (6.5%) underwent some form of repeat EUS-based tissue acquisition after EUS-FNB with the Acquire needle. There were no adverse events. Conclusion: Overall, this study showed a high rate of tissue adequacy and production of a tissue core with this device with no adverse events seen in 200 patients. Comparative studies of different FNB needles are warranted in the future to help identify which needle type and size is ideal in different clinical settings