Two cases of massive hemoptysis due to bronchial artery supply to previously embolized pulmonary arteriovenous malformation

We present two patients who experienced massive hemoptysis during follow up after pulmonary artery embolization with coils for Pulmonary Arteriovenous Malformations (PAVM). The treated PAVMs responsible for hemoptysis were supplied from the bronchial artery. Hemoptysis was controlled for a short time by bronchial artery embolization with n-butyl-2-cyanoacrylate in case 1 and gelatin sponge in Case 2. Thereafter, however, one patient (Case 2) died of recurrent massive hemoptysis. These cases may indicate that bronchial artery supply is the cause of both hemoptysis and reperfusion of treated PAVMs.