“…Acute leukaemia may be the terminal stage of reticulum cell sarcoma (Beutler, 1954;Zeffren & Ultmann, 1960), lymphosarcoma (Sternberg, 1916;Flashman & Leopold, 1929) or Hodgkin's disease (Skworzoff, 1930;Skworzoff & Kazantzeva, 1930). The association of chronic myeloid leukaemia with malignant lymphoma, however, remains rarely recorded; the complicating disease process has been reticulosarcoma (Hanns, Israel & Sacrez, 1934;Wilcken, 1957;Belotipetskaya & Gets, 1960, lymphosarcoma (Yang, 1936Forkner, 1938;Sardesai & Bhatia, 1959;Howell & Whitfield, 1963;Kurai & Papp, 1965;Wilson & van Slyck, 1966) and Hodgkin's disease (Samwick, Cohn & Swiller, 1955;Lacker & complicated by monocytic leukaemia (Craven, 1936). Usually the diagnosis of chronic myeloid leukaemia has been established prior to recognition of the complicating disease, but in the case of Wilson & Van Slyck, a 54-year-old man, lymphosarcoma occurred 2 years before chronic myeloid leukaemia was detected (see Table 1).…”