The subclavius posticus muscle: an unusual cause of thoracic outlet syndrome

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• 作者：T. Smayra (1)
  L. Nabhane (1)
  G. Tabet (2)
  L. Menassa-Moussa (1)
  K. Hachem (1)
  S. Haddad-Zebouni (1)
  
• 关键词：Thoracic outlet syndrome ; Anatomic variant ; Subclavius posticus ; Magnetic resonance imaging ; Computed tomography
• 刊名：Surgical and Radiologic Anatomy
• 出版年：2014
• 出版时间：September 2014
• 年：2014
• 卷：36
• 期：7
• 页码：725-728
• 全文大小：534 KB
• 参考文献：1. Akita K, Ibukuro K, Yamaguchi K, Heima S, Sato T (2000) The subclavius posticus muscle: a factor in arterial, venous or brachial plexus compression? Surg Radiol Anat 22:111鈥?15 CrossRef
  2. Barkhordarian S (2007) First rib resection in thoracic outlet syndrome. J Hand Surg Am. 32:565鈥?70 CrossRef
  3. Forcada P, Rodr铆guez-Niedenf眉hr M, Llus谩 M, Carrera A (2001) Subclavius posticus muscle: supernumerary muscle as a potential cause for thoracic outlet syndrome. Clin Anat 14:55鈥?7 CrossRef
  4. Kolpattil S, Harland R, Temperley D (2009) Case report: a case of subclavius posticus muscle mimicking a mass on mammogram. Clin Radiol 64:738鈥?40 CrossRef
  5. Kutoglu T, Ulucam E, Gurbuz H (2005) A case of the subclavius posticus muscle. Trakia J Sci 3:77鈥?8
  6. Martin RM, Vyas NM, Sedlmayr JC, Wisco JJ (2008) Bilateral variation of subclavius muscle resembling subclavius posticus. Surg Radiol Anat 30:171鈥?74 CrossRef
  7. Oz莽akar L, G眉ney MS, Ozda臒 F, Alay S, Kiralp MZ, G枚r眉r R et al (2010) A sledgehammer on the brachial plexus: thoracic outlet syndrome, subclavius posticus muscle, and traction in aggregate. Arch Phys Med Rehabil 91:656鈥?58 CrossRef
  8. Tanaka S, Zukeran C, Nakagawa S (1998) A macroscopical study of the subclavius muscle of rat. Anat Anz 165:417鈥?24
  
• 作者单位：T. Smayra (1)
  L. Nabhane (1)
  G. Tabet (2)
  L. Menassa-Moussa (1)
  K. Hachem (1)
  S. Haddad-Zebouni (1)
  
  1. Radiology Department, School of Medicine, H么tel-Dieu de France Hospital, Saint Joseph University, Alfred Naccache street, Achrafieh, 16-6830, Beirut, Lebanon
  2. Cardiovascular Surgery Department, School of Medicine, Saint Joseph University, Beirut, Lebanon
  
• ISSN：1279-8517

文摘

We present the case of a 30-year-old female, complaining of thoracic outlet compression symptoms caused by a supernumerary muscle, the subclavius posticus, accompanied by a caudally inserted middle scalenus muscle on the second rib. This rare anatomic variant was clearly shown on CT angiography and MRI images and surgical treatment was successful. As first described by Rosenmuller in 1800, subclavius posticus is a supernumerary muscle originating from the cranial surface of the sternal end of the first rib, running laterodorsally beneath the clavicle, and inserting into the superior border of the scapula. Its role in thoracic outlet syndrome has been seldom demonstrated in living patients nor described in imaging, although it is theoretically easily recognizable on modern imaging modalities. It should be taken into account during workout of patients with thoracic outlet syndrome, since it can be potentially treated.