Utility of Intraductal Ultrasonography as a Diagnostic Tool in Patients with Early Distal Cholangiocarcinoma.

Since forceps biopsy complemented by IDUS can substantially improve the diagnostic rate, pathological investigations should be performed simultaneously after detection by IDUS. We believe that noninvasive modalities should be followed by IDUS and used as a decisive approach to distinguish between benign and malignant status.