An accessory middle scalene muscle causing thoracic outlet syndrome.
Paraskevas G, Ioannidis O, Papaziogas B, Natsis K, Spanidou S, Kitsoulis P.
Folia Morphol (Warsz). 2007 Aug;66(3):194-7.
PMID:17985318
A rare case of overlapping thoracic outlet syndrome attributed to an anatomical variation in the anterior scalene muscle: Diagnostic challenges and treatment approaches.