Total anomalous pulmonary venous connection x ray

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Cafer Zorkun, M.D., Ph.D. [2]; Keri Shafer, M.D. [3]; Priyamvada Singh, MBBS [4]; Assistant Editor-In-Chief: Kristin Feeney, B.S. [5]

Overview

The findings on chest radiography vary depending on the type of anatomic variant of total anomalous pulmonary venous connection (TAPVC). However, the findings are not useful in making the diagnosis.

X Ray

• Unobstructed:
  • Snowman sign : A large supracardiac shadow due to anomalous pulmonary vein and persistent left superior vena cava can be seen, which together with normal cardiac shadow forms a snowman appearance.
  • Mild dilatation of the pulmonary arteries.
  • Mild cardiomegaly

• Obstructed:
  • Pulmonary vein congestion
  • Dilatation of the pulmonary arteries
  • Pulmonary edema

Image