Cross sectional imaging is transforming the diagnosis of rare congenital defects

Abstract Aim Partial anomalous pulmonary venous connection (PAPVC) is a rare congenital anomaly in which at least one of the veins do not drain into left atrium. Patients with PAPVC can often be asymptomatic and presence right heart dilatation on echo should prompt assessment anatomy. The aim this study was to compare anatomical features contemporary cohort patients previous historical cohorts, order determine whether use 3 dimensional imaging techniques has altered diagnostic yield subtypes. Methods A retrospective review diagnosed basis CT and/or MRI imaging, between 2010 2020. Results 45 cases were found. 60% women an average age 53 years (17–85 years). 25 20 CT, scanning being used increasing frequency during period covered. most common pattern right-sided involvement, isolated 36 (80%) – see chart 1. Of these, majority had upper (19, 53%); 13 (36%) middle PAPVC, 1 2 lower unilateral PAPVC. Bilateral involvement seen 4 (9%), left-sided (7%), (4%). Associated sinus venosus defects (SVDs) only detected 15 (33%): 14 APVC bilateral There superior SVDs, inferior SVD coronary (see 2). 27 (48%) Turner's Syndrome, Most (8, 61%), (23%) (31%) 3. 17 (38%) have their surgically redirected, (29%) associated SVD. Conclusion With Increasing cross sectional we are seeing heterogeneity patterns compared cohorts1,2. Interatrial communications less frequently seen, unusual drainage more our Syndrome group. Funding Acknowledgement Type funding sources: None. scan