Atypical Presentation of Paget-Schroetter Syndrome: Case Report and Management.

Upper extremity deep vein thrombosis (UEDVT) is a rare condition that makes early clinical evaluation and treatment important prior to the formation of deep vein thrombosis (DVT). Typical risk factors include male sex, young age, repetitive arm over abduction and hyperextension, indwelling catheters, cervical first rib, and thoracic outlet syndrome. One common cause of UEDVT is Paget-Schroetter syndrome (PSS). If untreated, pulmonary complications such as venous thromboembolic disease and pulmonary embolism (PE) may develop. We present a case of a 34-year-old Caucasian female who presented to the emergency department with sudden, acute right arm pain after blow-drying her hair, consistent with UEDVT. CT angiography (CTA) demonstrated moderate thromboembolic disease within segmental and subsegmental branches of the left upper, left lower, and right lower lobes. Ultrasonography (US) of the upper extremity showed non-compressibility of the right axillary and basilic vein, a finding consistent with acute DVT. Peripheral angiogram revealed imaging consistent with undiagnosed thoracic outlet syndrome secondary to effort thrombosis. The patient deferred surgical intervention and agreed to begin long-term anticoagulation therapy. PSS requires immediate recognition and treatment to prevent possible long-term neurologic and vascular compromise. Despite the patient lacking the typical population demographics, PSS should be considered given the patient's symptoms and presentation. Recognition of UEDVT despite classic signs and symptoms consistent with known risk factors is imperative upon clinical suspicion. Delay in clinical management may lead to fatal complications. We aim to highlight a case of PSS along with alternative pathways for treatment delivery.