We report the case of a young Afro-Caribbean patient who complained of dry cough and low-grade fever. A chest film upon admission showed bilateral hilar masses in the lungs, which a CT scan with contrast medium confirmed were giant aneurysms of the pulmonary artery. The most relevant past history was deep venous thrombosis six months before admission. Hughes-Stovin syndrome was diagnosed and treatment was started with prednisolone and azathioprine. A scan 6 months after treatment ended showed the aneurysms had disappeared. Hughes-Stovin syndrome is characterized by pulmonary artery aneurysms and peripheral deep venous thromboses. Severe lung complications can include hemoptysis and thromboses inside the aneurysms. Hughes-Stovin syndrome has been considered a variety of BehCet's disease.