Behçet's disease presenting with a pulmonary mass lesion.

We report a case of Behçet's disease with pulmonary and splenic involvement. The radiologic presentation was quite different from the modes defined in the literature. A large, anteriorly located, well circumscribed ovoid mass was the x-ray film image of a large area of infarction with hemorrhage. The involved pulmonary artery showed signs of vasculitis with thrombus formation. To our knowledge, this mode of presentation is different from the cases reported in the literature.