DISEASE CHARACTERISTICS: Chronic lymphocytic leukemia (CLL) patients after initial relapse who have achieved a complete or partial remission with fludarabine therapy or after initial relapse or progression Prolymphocytic leukemia in first remission or after relapse Patients 15-65 years old who lack an HLA-identical sibling are eligible for autologous BM transplantation Patients 16-50 years old with an HLA identical or one antigen mismatched related donor are eligible for allogeneic BM transplantation