PULMONARY BLASTOMA

1 January 1976

journal article
research article

Vol. 72 (5) , 801-808

Abstract

Two cases of pulmonary blastoma are reported. One occurred in a 29 yr old man 31 mo. after a cyst was excised from the same pericardial-pleural area. The cyst appeared to be of mesothelial origin and, although supported by a cellular stroma, was originally considered to be benign. The morphologic features, location and possible relationship to a mesothelial lesion suggest an embryonal-mesothelial origin of the tumor. The patient died of recurrent and metastatic disease 9 yr after the 1st resection. The 2nd case is that a now 74 yr old woman who, over a period of 19 yr, had 6 small peripheral lung tumors excised. They originally resembled fibrous hamartomas but included embryonal-type immature areas and became increasingly more cellular and sarcomatous. The fine structure of the recurrent tumors is that of primitive stroma with few fibrils but no other differentiating features.

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