C-banding studies in acute nonlymphocytic leukemia.

C-Banding studies were performed on cells of 100 acute nonlymphocytic leukemia (ANLL) patients. No differences were found among patients in regard to age or sex. When compared to 70 healthy controls, an excess of a symmetrical distribution of 9qh was found, mainly due to an increased incidence of changes at level 2 according to the Patil and Lubs classification.