Bilious pleural effusion or cholethorax is a rare type of exudative pleural effusion. Here is presented a case of right-sided cholethorax, in which the direct communication between the pleural effusion with the biliary duct was visible only on the posteriori images of dynamic hepatobiliary scintigraphy with [99mTc]mebrofenin.
Keywords: biliopleural communication; cholethorax; hepatobiliary scintigraphy.