Right pulmonary artery-to-left atrial fistula: a differential diagnosis of cyanosis without structural heart disease

J Invasive Cardiol. 2007 Sep;19(9):401-2.


We present the case of a 19-year-old male who presented with late-onset cyanosis and a normal cardiovascular system examination. Contrast echocardiography revealed a right-to-left shunt. A right pulmonary artery-to-left atrial fistula was seen on the angiogram, which was surgically corrected. Early intervention is indicated to prevent complications in patients with this condition.

Publication types

  • Case Reports

MeSH terms

  • Adult
  • Cardiac Catheterization
  • Coronary Angiography
  • Cyanosis / diagnostic imaging
  • Cyanosis / pathology
  • Diagnosis, Differential
  • Echocardiography
  • Fistula / diagnostic imaging*
  • Fistula / pathology*
  • Heart Atria / diagnostic imaging
  • Heart Atria / pathology*
  • Humans
  • Male
  • Pulmonary Artery / diagnostic imaging
  • Pulmonary Artery / pathology*
  • Pulmonary Veins / diagnostic imaging
  • Pulmonary Veins / pathology