EUS-FNA for patients with suspected malignant biliary strictures after negative results by endoscopic transpapillary brush cytology or forceps biopsy

Abstract

Background: Endoscopic transpapillary brush cytology or forceps biopsy is widely used for patients with suspected malignant biliary strictures. However, since the sensitivity of these methods remain insufficient, it is sometimes difficult to confirm the diagnosis of malignancy. In such cases, alternative sampling techniques are required for providing a definitive diagnosis that will aid in choosing a treatment strategy.