[Conservative treatment of tumors of the retina at the Curie Institute. Long-term results of 129 cases treated with Stallard's disk and electrons].

The authors report a retrospective study of 129 children with retinoblastoma treated from 1963 to 1977 at the Institut Curie by enucleation of the worst eye and conservative irradiation of the other eye; this irradiation was performed either with Stallard plaque (19 cases) or with electrons (110 cases). In 8 familial cases, no enucleation has been performed. T.E.M. was used from 1964 to 1973 and iterative photocoagulation since 1968. With a 5 years follow up, 88 children (68%) are living NED, 6 are lost. There was 34 treatment failures (26%) and 1 death from second malignant tumor. At 10 and 15 years, the results are stable despite the occurrence of two other second primary tumors. Irradiation preserved 73/94 (78%) of the irradiated eyes. The technical aspects of the radiotherapy with electrons and both ocular and vital prognostic factors are discussed.