Pulmonary hypertension secondary to multiple pulmonary thromboembolisms due to thrombosis of the right subclavian vein

: Deep venous thrombosis of the upper limbs is a rare entity which is usually associated to a high number of risk factors, with an incidence of 12.4% approximately, although the development of associated fatal complications is rare. We present the case of a patient without known risk factors who, in the course of a thrombosis at the right subclavian vein, developed very severe pulmonary hypertension secondary to multiple pulmonary embolism.