Abstract No. 162 Pulmonary Arteriovenous Malformations: Which Factors Are Associated with Symptomatic Neurologic Complications in Solitary Lesions?

The purpose of this study was to investigate the factors associated with symptomatic neurologic complications in solitary pulmonary arteriovenous malformations (PAVMs). Patient data were obtained from 14 institutions. Data 207 patients (28 men, 179 women; median age, 65 years; age range, 9–94 years) who diagnosed a PAVM by CT between 2004 and 2020 analyzed. Of these, 104 underwent treatment 103 observed. follow-up period 22.5 months (range, 0–180 months). Thirty-six had (neurologic group; ischemic stroke, n = 34; brain abscess, 2). remaining 171 no symptoms (control group). Medical records images reviewed, relationships following compared groups: sex, location (left lung vs. right lung, upper or middle lobe lower lobe, distal site proximal site), type (simple complex), size feeding artery, sac, sac-to-feeding artery ratio, shape (single saccular multi-saccular). There difference two groups terms PAVM, PAVM. Median 3.9 mm 2.0–23.0 mm) 3.0 0.9–9.3 control groups, respectively (P 0.005). sac 9.9 3.5–25.7 6.5 1.7–39.3 < 0.0001). ratio 2.5 0.2–4.4) 2.0 1.0–5.9) 0.015). significant association multi-saccular 0.0023). In