Pulmonary arterial ectasia

Pulmonary arterial ectasia refers to more diffuse dilatation of the pulmonary arteries without a focal pulmonary arterial aneurysm. At the time of the writing upper limit of normal (90th percentile) for the main pulmonary arteries is taken at just under 29 mm for males and just under 27 mm for females. 


It can arise from a large number of factors with pulmonary arterial hypertension considered the most common. 

Other conditions include

Some suggest that presence of an ectatic pulmonary arterial diameter in the context of normal pulmonary arteries pressures as a benign finding 2

Article information

rID: 82079
System: Vascular, Chest
Synonyms or Alternate Spellings:
  • Pulmonary artery ectasia
  • Ectasia of pulmonary artery
  • Ectasia of pulmonary arteries

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