A patient with a carcinoma of the oral cavity, pleural empyema, persisting seropneumothorax, and suspected bronchopleural fistula underwent computed tomography for further evaluation. Volume acquisition using the spiral technique was the prerequisite for three-dimensional reconstruction, which was done by minimum intensity-projection and seed-based "volume of interest" segmentation. The diagnosis "bronchopleural fistula", which was displayed in its entire course, was confirmed.