Primary osteogenic sarcoma of pulmonary artery.

A 44-year-old woman was hospitalized for nonproductive cough. Chest roentogenogram revealed a calcified nodular mass at the right hilum. The patient was treated as tuberculosis of the hilar lymph node, however, her symptoms exacerbated within a year. A tumor obstructing the right main stem bronchus was demonstrated on bronchofiberscopic examination. Thoracotomy was carried out and tumor was diagnosed as primary osteogenic sarcoma of the pulmonary artery by pathological examination of the resected specimen. There was no clinical finding of osteogenic sarcoma throughout the bones.