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
- rheumatologic/vasculitic conditions
- connective tissue disease
- infectious etiology
- tuberculosis: tuberculosis vasculopathy
- syphilis: syphilis vasculopathy
- trauma: blunt / penetrating
Some suggest that presence of an ectatic pulmonary arterial diameter in the context of normal pulmonary arteries pressures as a benign finding 2.
- 1. Raymond TE, Khabbaza JE, Yadav R, Tonelli AR. Significance of main pulmonary artery dilation on imaging studies. (2014) Annals of the American Thoracic Society. 11 (10): 1623-32. doi:10.1513/AnnalsATS.201406-253PP - Pubmed
- 2. Rose C, Wessel A. Three-decade follow-up in pulmonary artery ectasia: risk assessment strategy. (2002) The Annals of thoracic surgery. 73 (3): 973-5. doi:10.1016/s0003-4975(01)03123-x - Pubmed