Primary ('stress') thrombosis of the upper arm associated with multiple pulmonary embolism.

Primary venous thrombosis of the upper arm is an uncommon but distinct syndrome. Although there is a high incidence of residual disability due to failure of the vein to recanalize, pulmonary embolism is unusual, and residual pulmonary symptoms or fatalities have not previously been reported. A case of thrombo-embolic pulmonary hypertension complicating primary thrombosis in the upper arm is described. Prompt recognition and treatment of the condition are recommended.