A 23-year-old, right hand-dominant, male active-duty Marine self-referred to physical therapy with dull right anterior shoulder pain. The physical therapist referred the patient for a diagnostic ultrasound to rule out effort thrombosis of the axillary and subclavian veins. Same-day Doppler ultrasonography revealed an occlusive thrombus in the middle subclavian and axillary veins. J Orthop Sports Phys Ther 2020;50(9):532. doi:10.2519/jospt.2020.9585.
Keywords: shoulder; ultrasound; upper extremity.