Central large pulmonary arteriovenous malformation with aneurysmal dilatation.

A centrally located large pulmonary arteriovenous malformation (PAVM) with aneurysmal formation is uncommon and the optimal treatment remains unclear. Here we report a 63-year-old female with a large PAVM located in the pulmonary hilum presenting with dyspnea and a brain abscess. A muscle-sparing thoracotomy with lobectomy of the left upper lobe was successfully performed under the guidance of three-dimensional reconstruction imaging of the thoracic vasculature.