1. A CASE OF PULMONARY ARTERIOVENOUS MALFORMATION PRESENTING AS HAEMOPTYSIS ABSTRACT NO:IRIA 1084

2. 67 year old lady with complaints of haemoptysis
She is a known case of systemic hypertension with severe tricuspid regurgitation and PAH.

3. ECHO revealed severe tricuspid regurgitation with dilated right atrium and ventricle, suggestive of severe PAH

4. CT scanogram showing well defined radio dense nodule in right lower zone behind the cardiac shadow with pruning of pulmonary vessels ,enlarged pulmonary trunk and cardiomegaly
CT Scanogram

5. Plain CT showing well defined radio dense lobulated nodule in the posterior segment of right lower lobe.

6. Nodule is enhancing equal to the main pulmonary artery with appearance of early draining vein

7. Arterial supply from right lower lobe pulmonary artery and draining into right inferior pulmonary vein

8. CT thorax features are consistent with pulmonary AV fistula supplied by right lower lobe pulmonary artery and venous drainage into inferior pulmonary vein
Diagnosis was confirmed with catheter angiography

9. Enlarged lower lobe pulmonary artery with sac filling with contrast draining into the inferior pulmonary vein

10. Endovascular embolisation device

11. Post embolisation angiogram shows complete obliteration of the AV fistula

12. Discussion
Pulmonary arterio venous malformations are lesions of pulmonary vasculature that by pass the capillary system flowing from arteries directly into veins
Incidence 2-3 per population
More common in females than in male 2:1

13. Types
Simple
-Single feeding artery empties into bulbous, non septated aneurysmal segment
-Single draining vein
Complex
-More than one feeding artery empty into septated, aneurysmal segment
- More than one draining vein

14. 1.Surgery 2.Endovascular embolisation a. Coil b. vascular plug
Treatment options
1.Surgery 2.Endovascular embolisation a. Coil b. vascular plug

15. CONCLUSION Pulmonary AVM is a rare vascular malformation of lung.
Contrast CT/CT angio has high specificity and sensitivity.
Endovascular embolisation is the most effective and least invasive choice of treatment.

16. REFERENCE
Sat Sharma, MD, FRCPC; Chief Editor: Eugene C Lin, MD Imaging in Arteriovenous Lung Malformation medscape Nov 7, 2013
I khurshid ,G H Downie Postgrad Med J  Pulmonary arteriovenous malformation ;78:191197 doi: /pmj
 Hodgson CH,Kaye RL. Pulmonary arteriovenous fistula and hereditary telangiectasia.Dis Chest1963;43:449–55
Packard GB, Waring JJ. Arterio-venous fistula of the lung treated by ligation of the pulmonary artery. Arch Surg1945;56:724–40.