[Mediastinal surgery in children].

From 96 surgical interventions in the child, the authors studied the repartition of tumours according to their histological nature, their benignity or malignancy. For each kind of tumour they gave its frequency and clinical, radiological and biological data. Above all they studied the distant results of these interventions with an important set back. The results are excellent for benign tumours and promising for malignant ones and enable the deduction of therapeutical indications.