Much has been written during the past years concerning the so-called lymphoblastomas. Opinions as to the proper classification of this group of diseases have varied widely. Theories have included a neoplastic and an infectious background. Some observers have referred to the members of this group as separate clinical entities; others have preferred the explanation of genetically related variations of a common tissue source. More recently there seems to be an increasing agreement of opinion among those interesting themselves in this particular group of diseases. Keim's1 statement suggesting a common origin in the hematopoietic or reticulo-endothelial system is apparently accepted by an increasing number of investigators. According to a recent statement by Wile,2 the occurrence of mutations as well as their significance ". . . constitutes strong evidence in favor of the view that lymphoblastomas are genetically related neoplasms involving the lymphoid tissues." It was this growing conception
KINGERY LB, OSGOOD EE, ILLGE AH. STERNAL PUNCTURE: A DIAGNOSTIC AID IN LEUKAEMIA CUTIS; A POSSIBLE AID IN DIFFERENTIATING THE LYMPHOBLASTOMAS. Arch Derm Syphilol. 1937;35(5):910–918. doi:10.1001/archderm.1937.01470230148008
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