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Patient with cyanosis. Lung perfusion scan.

2011
Teaching Case

Case presentation:

  • Male.
  • 3 months old.
  • Admiitted because of cyanosis and hypoxemia, unmodified after oxygen therapy.
  • Chest X-ray showed an opacity in the left upper field.

Teaching points:

  • Pulmonary arterovenous fistulae may be multiple, and they may open at diferent ages.
  • Perfusion lung scan allows a non-invasive, sensitive and reproducible quantification of right-to left-shunts, that correlates with hypoxemia.

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