[Cytogenetics in bone marrow transplantations. II. Acute lymphocytic leukemia].

In this we report cytogenetic data concerning two patients with Acute Lymphoblastic Leukemia (ALL), submitted to bone marrow transplantation. In one of two patients the chimere was present while in the other case it was absent, since the donor and the acceptor were of the same sex. However even in the latter case, the cytogenetic analysis was useful and led to the identification of endomitosis and endoreduplication phenomena, which are signs for an unlucky prognosis.