84. 有關Pulmonary arteriovenous fistula (PAVFs)敘述，下列何者錯誤？ (A) Blood supply較常來自systemic circulation (B) Classic triad 包括cyanosis, polycythemia, and clubbing of the fingers or toes (C) Single lesion可採用surgical resection, multiple lesions可以embolic obliteration治療 (D) PAVFs的feeding artery超過3 mm會建議需要治療