Acute myeloid leukemia with T-cell receptor gamma gene rearrangement occurring in a patient with chronic lymphocytic leukemia: a case report.

The association of chronic lymphocytic leukemia (CLL) and acute leukemia, either lymphoid or myeloid is a rare event. Our review of the medical literature revealed only 6 cases of CLL transformation to acute myeloid leukemia (AML) (M0, M1 and M2) with no other associated malignancy. We report a similar case but with occurrence of AML-M4 associated with normal cytogenetic analysis and molecular testing but with positive T-cell receptor gamma gene rearrangement rather than the usual Vbeta rearrangement.