Table 1 Demographic data of the patients.

	n	%
Patients	56	100
Sex
Men	44	78.6
Women	12	21.4
Median age (years)	37–91 (64.4)
Presenting lymphocyte count (×109/l)	2–236 (17.5)
Rai stage
>2	22	40.7
⩽2	32	59.3
Unknown	2
Karyotypic abnormalities	39
del 13q14	3	7.7
Trisomy 12	5	12.8
Complex	11	28.2
Normal	20	51.3