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Anat Clin. 1984;6(3):209-13.

The nerve loops crossing below the subclavian artery and their anatomical variations.

Abstract

60 dissections analysed the variability of three types of nerve loops crossing beneath the subclavian artery : Vieussens' annulus, the anastomotic ansa between the lower laryngeal nerve and the cervical sympathetic, and the anastomotic ansa between the phrenic nerve and the stellate ganglion. The classic disposition of these loops, situated below the artery and present simultaneously, was found in only 10% of the cases. Though Vieussens' annulus was present in most of the dissections, the anastomotic ansa between the cervical sympathetic and both the lower laryngeal nerve and the phrenic nerve corresponds more rarely to the conventional pattern.

PMID:
6518114
[Indexed for MEDLINE]

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