subclavian artery: case report.
It has been well-known that ectopic locations such as the upper mediastinum and the retroesophageal
area, or deep location of the adenoma, pose particular challenges for the sonographic evaluation (23, 24).
A tracheo-esophageal groove, mediastinal or retroesophageal
parathyroid adenoma makes ultrasound localization poor if not impossible because of the acoustic shadow cast by the larynx, trachea and the sternum.
While ventricular septal defect (VSD) was observed in some of the SAV1 mutant hearts , VSD also occurred in cardiac/vascular smooth muscle cell(SMC-) specific YAP ablation mice, which may harbor other severe vascular malformations like dysplastic arterial wall, hypogenetic brachiocephalic artery, and retroesophageal
right subclavian artery .
Chevalier, "Arterioesophageal fistula: a rare complication of retroesophageal
subclavian arteries," Annals of Vascular Surgery, vol.
Axial chest computed tomography reveals a retroesophageal
aberrant right subclavian artery (white arrow) and a Kommerell's diverticulum (gray arrow) with partial thrombosis.
 In case of retroesophageal
course of ARSCA, it may compress esophagus from behind causing dysphagia clinically known as dysphagia lusoria.
ARSA incidence is up to 3% in patients with congenital heart defects and ranges from 2.9% to 100% in patients with Down syndrome.[sup] ARSA may follow a retroesophageal
course (80–84%), a course between the trachea and the esophagus (12.7–15%), or a pretracheal route (4.2–5%).[sup] The atypical vessel may compress the trachea and the esophagus while forming an incomplete vascular ring around them.
These included a right sided aortic arch, a prominent ductus diverticulum, and a retroesophageal
In fact, we also recommend LNM for patients with latent nonrecurrent LN associated with a retroesophageal
right subclavian artery, those with previous neck surgery or irradiation, those with palpable lymphadenopathy, and those with nodules showing RLN invasion or compression on USG and requiring open thyroidectomy.
Hitosugi et al., "Three cases of retroesophageal
right subclavian artery," Journal of Nippon Medical School, vol.
Such a right subclavian artery named as retroesophageal
right subclavian artery (RRSA).