A seventy-seven year old man with an eleven year history of benign, idiopathic eosinophilia died with a rapidly progressive myeloblastoma of the pleura and pericardium. The only bone marrow involvement resulted from contiguous extension of the pleural neoplasm into ribs, and there were no distant tumor foci. The course differed from that in previously reported eosinophilic conditions and included elevated serum vitamin B12 levels, normal serum muramidase and absence of visceral involvement by eosinophils. At no time was there evidence of leukemia.
ASJC Scopus subject areas