Marked lateral deviation of the phrenic nerve due to variant origin and course of the thyrocervical trunk: a cadaveric study.
Surg Radiol Anat
; 38(4): 485-8, 2016 May.
Article
em En
| MEDLINE
| ID: mdl-26438272
ABSTRACT
Phrenic nerve impairment can often lead to serious respiratory disorders under various pathological conditions. During routine dissection of an 88-year-old Japanese male cadaver, a victim of heart failure, we recognized an extremely rare variation of the right thyrocervical trunk arising from the subclavian artery laterally to the anterior scalene muscle. In addition to that, the ipsilateral phrenic nerve was drawn and displaced remarkably laterad by this vessel. We examined all of the branches arising from subclavian arteries, phrenic nerves and diaphragm muscles. The embryological background of this arterial variation is considered. The marked displacement with prolonged strain had a potential to cause phrenic nerve impairment with an atrophic change of the diaphragm muscle. Recently many image diagnostic technologies have been developed and are often used. However, it is still possible that rare variations like this case may be overlooked and can only be recognized by intimate regional examination while keeping these rare variations in mind.
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Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Nervo Frênico
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Artéria Subclávia
Limite:
Aged80
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Humans
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Male
Idioma:
En
Ano de publicação:
2016
Tipo de documento:
Article