A 62-year-old man with a long history of lung disease developed
atelectasis of the right middle lung lobe, caused by a protrusion in
the wall of the middle lobe bronchus. A biopsy was performed in the
suspicious region. This was immediately followed by massive arterial
bleeding into the airways and complicated by cardiac arrest soon after.
The bleeding could not be controlled by nonsurgical treatment; the
patient died 24 h after the complication because of pulmonary
insufficiency. Autopsy revealed the bleeding to have been caused by a
biopsy injury of a bronchial artery that had run superficially in the
bronchial mucosa and had produced the intrabronchial protrusion.
Several other abnormal intrabronchial arteries were found peripherally
in this lung.