Abstract
Abstract From 1973 to 1976, 81 children with lymphoblastic acute leukemia were treated with cranial prophylactic irradiation at the Istituto di Radioterapia “L. Galvani” dell'Universita di Bologna. We divided the patients into 6 groups according to different characteristics. At the beginning of 1978 the survival rate was 82%; 60 patients (74%) were in complete continuous remission. We studied the encephalic post irradiation syndrome that is present in children over 2 years of age only when doses are higher than 2500 rad and in children under 2 years of age when doses exceed 2000 rad. This complication occurs frequently in the experience of other authors; however, it is absent under certain doses with which it is possible to obtain the same good results. We feel that among the different techniques and methods, the best radiological treatment is daily bilateral cranial irradiation for patients early in remission; we recommend doses of 2400 rad for children above 2 years of age and 1950 rad for those under 2 years.
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