A Case of Pulmonary Blastoma with Concomitant Squamous cell Carcinoma and Adenocarcinoma of the Lung

Abstract

A 45 year-old male case of pulmonary blastoma, squamous cell carcinoma and adenocarcinoma of the lung was reported with some discussion of the nature of pulmonary blastoma. He had three tumors, 2 in the right upper lobe and one in the left. The tumors were expanding rapidly on chest X-ray film. Right upper lobectomy was performed. Pathologic examination revealed the tumor in the right S₁ to be pulmonary blastoma and squamous cell carcinoma, and that in the right S₂ to be adenocarcinoma. Neither surgery nor pathologic examination were performed on the tumor in the left lung. The histologic results of this case supports, we feel, the single germinal origin theory, i.e. both adenomatons and the squamous components are derived from stromal cell of pulmonary blastoma.
This is the 64th case of pulmonary blastoma in the world and the 11 th in Japan.