1. Laboratoire de Cytogénétique, Centre G. Heym, UER d''Hématologie, Hôpital Saint-Louis, Paris, France;2. Laboratoire d''Hématologie, Centre G. Hayem, UER d''Hématologie, Hôpital Saint-Louis, Paris, France
Abstract:
Chromosome studies were performed on ten acute monocytic leukemias of which seven were poorly differentiated and three well differentiated. Chromosome abnormalities were found in 8 cases. Rearrangements of chromosome 11 were observed in 5/7 of the poorly differentiated cases. Although not specific, chromosome 11 rearrangements appear to be abnormally frequent in poorly differentiated acute monocytic leukemias.