Pseudocoarctation of the aorta
Citation, DOI & case data
Asymptomatic, suspicion of thoracic aorta aneurysm.
CTA of the aorta
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Buckling of the thoracic aorta at the level of the ligamentum arteriosum with elongation of the descending portion, without focal stenosis or marked dilation. No collateral vessel formation.
This is a rare anomaly characterized by a buckling or kinking of the descending aorta at the level of the ligamentum arteriosum, without significant hemodynamic obstruction or pressure gradient across the lesion, and therefore no collateral vessel formation.
Embryologic theory: failure of compression and fusion of the third through tenth segments of the dorsal aortic roots and of the left fourth arch segment when the cephalic shift of the seventh dorsal intersegmental artery occurs. As a result, the aortic arch is longer than normal, and eventually twists or kinks at the point of insertion of the ligamentum arteriosum. Pseudocoarctation may also result from a short, taut ligamentum arteriosum or PDA.
This entity is usually asymptomatic and does not need interventional treatment in most of the cases.
- 1. Kimura K, Ohtake H, Kato H, Yashiki N, Tomita S, Watanabe G. Pseudocoarctation of the aorta complicated by thoracic aortic aneurysm. (2011) Asian cardiovascular & thoracic annals. 19 (3-4): 265-7. doi:10.1177/0218492311407782 - Pubmed
- 2. Kate Hanneman, Beverley Newman, Frandics Chan. Congenital Variants and Anomalies of the Aortic Arch. (2016) RadioGraphics. 37 (1): 32-51. doi:10.1148/rg.2017160033 - Pubmed