Citation, DOI, disclosures and article data
Citation:
Gaillard F, Retropectoralis minor space. Reference article, Radiopaedia.org (Accessed on 20 Mar 2025) https://doi.org/10.53347/rID-88804
Retropectoralis minor space or subpectoralis minor space is the lateral most space traversed by brachial plexus and adjacent artery and vein as they pass from the axilla to the thorax, and is thus a location of potential compression leading to thoracic outlet syndrome.
It is best seen in the sagittal plane and is triangular in shape bounded by 1,2:
- anterior wall: deep surface of pectoralis minor muscle
- posterior wall: subscapularis muscle
- apex: clavicle
- floor: lateral chest wall (2nd rib)
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1. Boezaart AP, Haller A, Laduzenski S, Koyyalamudi VB, Ihnatsenka B, Wright T. Neurogenic thoracic outlet syndrome: A case report and review of the literature. (2010) International journal of shoulder surgery. 4 (2): 27-35. doi:10.4103/0973-6042.70817 - Pubmed
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2. X. Demondion, N. Boutry, A. Drizenko, C. Paul, J. P. Francke, A. Cotten. Thoracic Outlet. (2012) American Journal of Roentgenology. doi:10.2214/ajr.175.2.1750417
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