[Results of brain tomography in acute lymphoblastic leukemia in children]. / Résultats de la tomométrie encéphalique dans les leucemies aiguës lymphoblastiques de l'enfant.

Computerised axial tomography (CAT scan) was performed in 22 children with acute lymphoblastic leukaemia and in 13 the results were normal. In the other nine, various lesions were observed; namely intra-parenchymal lesions of density of (3 cases, one of which was calcified), intra-parenchymal lesions of decreased density (2 cases) and ventricular dilatation (7 cases). The role of the disease and of the treatment (intra-thecal methotrexate, cranial irradiation) in the development of these lesions is discussed. The CAT scan is an excellent method of monitoring the neurological problems in acute lymphoblastic leukaemia.