To the great majority of American dermatologists the term cutaneous lymphoblastoma conveys a certain definite clinical picture. It consists usually of a preliminary diffuse dermatitis (generalized scaly erythroderma) succeeded by a tumor-like stage (granuloma fungoides sensu stricto). It is the clinical phase which commands the scene. Promptly after the appearance of the clinical manifestations, however, the picture becomes associated with disease of the lymphoid apparatus. Therefore, considerations of this subject must be arranged into, and must revolve around, two fields: (1) the essentially dermatologic and (2) the hematopoietic.
It is not urgent to discuss the former field because dermatologists are so familiar with it, but at present there is real need for better understanding of the precise scope of the lymphoblastoma. The rôle of the lymphocyte in particular is implied, for if the suffix is removed from ``lymphoblastoma'' only ``lymphoblast'' remains. Indeed it was the original intention