Upper extremity deep vein thrombosis is an uncommon and often-times overlooked phenomenon. The presentation may be subtle, especially in the young, otherwise healthy demographic. Review of the literature focuses on secondary causes, most commonly involving sicker patients with multiple underlying comorbidities and in the context of invasive venous catheters. Here, we report a case of a young woman who presented with an extensive upper extremity deep vein thrombosis secondary to thoracic outlet obstruction after just a few days of strenuous exercise.
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