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Only few patients (3,8%) affected by ANLL survive for more than 3 years from the time of diagnosis. In the present study the Authors try to determine which clinical and haematological factors can determine long-terme survival. The Authors describe the case of a male patient (25 years old) affected by ANLL (M2), who became and is still now a long-survivor (80 months from 1th complete remission). He has been treated with DNB, ARA-C and TG (TRA schedule) for two cycles. After CR he refused consolidation and reinduction therapy and was treated only with 6-MP and MTX for 3 years, as maintenance chemotherapy. The Authors suggest that important factors for a favourable prognosis are early diagnosis and young age. A relatively high number of platelets can be correlated with a good prognosis.

Free radicals and peroxides of our organism, that are very unstable, are now recognized as a product of biological oxido-reductive processes. The evaluation of free radicals and peroxides in blood was done by counting Heinz-bodies (H.B.) (Beutler method). The Authors examined 40 healthy subjects, at rest, and 37 neoplastic patients (19 carcinomas, 10 leukemias, 8 lymphomas) at the admission to hospital. The results show that the rate per cent of H.B. in neoplastic patients is significantly higher than in healthy subjects. According to us, neoplastic patients have free radicals hematic levels higher than healthy volunteers.

We describe the case of a man, previously affected by B-CLL, who developed Sweet's syndrome four months later the previous diagnosis. Sweet's syndrome was diagnosed by cutaneous biopsy. Neither infections nor drugs administration were demonstrated, in order to explain beginning of Sweet's syndrome. Altered immune responsiveness, as seen in B-CLL, could cause Sweet's syndrome.