The Anatomical Variant of axillary musculature, the axillary arch muscle of Langer is of clinical and surgical importance leading to neurovascular compression syndrome and impairs shoulder movements. We observed the cadavers in our routine dissection in department of anatomy at Mamata Medical College, Khammam. In Our routine dissection, we observed the muscular slip extending from latissmusdorsi to pectoralis major, arching over axillary vessels and cords& branches of brachial plexus. The axillary arch may compress the neurovascular bundle (second part of axillary artery, axillary vein,cords of brachial plexus) leading to thoracic outlet syndrome and shoulder instability.