Alterazioni Cromosomiche dei Leucociti Indotte nel Bambino da Irradiazioni Diagnostiche — (Nota preliminare)

SUMMARYThe Authors have observed a high rate of chromosomal morphologic alterations in leukocyte cultures in 10 children who had previously undergone Roentgen irradiation for diagnostic purposes. Temporary alterations have been observed, such as interruptions of chromatine on the proteic thread, defined as achromatic lesions of one or more chromatids; fragmentations of chromatids; fragments without centromere; deletions; ring-chromosomes; dicentric and tricentric chromosomes and, in certain cases, increase of polyploid mitoses, both on account of endo-reduplications or of a lacking cytoplasm division.