Tokyo, Sept. 29 -- UMIN Clinical Trials Registry (UMIN-CTR) received information related to the study (UMIN000063087) titled 'Risk Factors for Early Recurrent Biliary Obstruction After Multiple Inside Plastic Stent Placement for Unresectable Malignant Hilar Biliary Obstruction: A Multicenter Cohort Study' on Sept. 28.

Study Type: Observational

Primary Sponsor: Institute - First Department of Internal Medicine, Gifu University Hospital

Condition: Condition - Unresectable malignant hilar biliary obstruction Classification by malignancy - Malignancy Genomic information - NO

Objective: Narrative objectives1 - The purpose of this study is to clarify the cumulative incidence and risk factors for early recurrent biliary obstruction (RBO) in p...