Tricuspid atresia chest x ray

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor-In-Chief: Keri Shafer, M.D. [2] Priyamvada Singh, MBBS [3]; Assistant Editor-In-Chief: Kristin Feeney, B.S. [4]

Chest X Ray

• A chest x-ray may be helpful in the diagnosis of tricuspid atresia. Findings on an x-ray suggestive of tricuspid atresia include
  • Situs solitus
  • Left-sided aortic arch
  • Levocardia
  • Absent main pulmonary artery
  • Pulmonary oligemia with decreased vascular markings
  • Right aortic arch in %25 of cases.

• Shown below is an example of chest x-ray in a patient with tricuspid atresia demonstrating the following features:
  • Reduced pulmonary blood flow
  • prominent aortic root (AO) and right atrium (RA)
  • right atrial (RA) enlargement
  • absence of a right ventricle
  • The left ventricle (LV) enlargement

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