Ductus arteriosus aneurysm

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[edit] Discussion of Ductus arteriosus aneurysm

  • Aneurysm of the ductus arteriosus is a rare entity in adults
  • The ductus arteriosus is a short tubular connection between the left pulmonary artery and aorta. A remnant of the left sixth aortic arch, it normally undergoes physiologic closure soon after birth
  • In the few reports of aneurysms involving a patent ductus arteriosus in adults, it is uncertain whether the ductus arteriosus recanalized or original patency persisted.
  • Normal closure proceeds from the pulmonary artery to the aortic end. Therefore, when closure is incomplete, the pulmonary side closes and the aortic side remains patent.
  • 60% fatality rate due to complications rupture (i.e. dissection, infection, and distal embolization occur)
  • Criteria for resection include lesions greater than 3 cm in diameter, symptomatic aneurysms, and any that show progressive enlargement.

[edit] Imaging Findings for Ductus arteriosus aneurysm

[edit] Plain film

  • Ductus arteriosus aneurysm maybe perceived as a change in the contour of the aortic arch or aortopulmonary window (adenopathy, neoplasms,or aneurysms related to the aorta itself are certainly more common masses at this site).
  • Calcifications at the periphery of the lesion suggesting its vascular nature.

[edit] CT

  • CT will show the relationship of the aneurysm to the aortic arch and pulmonary artery, while possibly revealing calcifications not detected by plain radiographs.
  • The diameter of the lesion and presence of mural thrombus also will be identified.

[edit] Images

Patient #1

[edit] See Also

[edit] External Links

[edit] References for Ductus arteriosus aneurysm