Spontaneous Regression of a Large Ductus Arteriosus Aneurysm in a Neonate

Abstract

1 a 2 n “ R 3 L t d s hrough screening echocardiography, a ductus arteriosus aneurysm was found in a 3-day-old male neonate with a gestational age of 40 weeks and a birth ody weight of 3120 g. The pulmonary opening of the anurysm was 0.21 cm. The multi-detector row computed toography (MDCT) at the age of 5 days clearly delineated the arge aneurysm with the maximal diameter of 1.5 cm, which as compressing the left pulmonary artery ( Figure, A and C ecause he was asymptomatic and had no significant murmur, e was discharged without any treatment. Follow-up echoardiography at the age of 1 month showed that the pulmoary opening of ductus arteriosus was spontaneously closed. DCT at the age of 9 months showed that the aneurysm was ell thrombosed with rim calcification ( Figure, B and D) he left pulmonary artery became bigger, without significant bstruction. The patient thrived without any symptoms. Neonatal echocardiographic screening in our series igure. Volume-rendering images of MDCT show A, a large ductus arteriosus neurysm in a neonate at the age of 5 days and B, thrombosed aneurysm with rim alcification (arrowheads) at the age of 9 months. Oblique sagittal images show , the aneurysm filled with contrast medium and compressing the left pulmonary rtery at the age of 5 days. D, The left pulmonary artery became bigger and the rganized thrombus was identified as the low-attenuation area within the calcified im (arrowheads) at the age of 9 months. AAO, Ascending aorta; DA, ductus neurysm; DAO, descending aorta; LPA, left pulmonary artery; MPA, main ulmonary artery; RV, right ventricle.