Table 1 Patients' characteristics.

Age, y

   >= 60

26 (26.5)

   <60

72 (73.5)

Sex

   Male

73 (74.5)

   Female

25 (25.5)

T-classification at initial diagnosis

   T1

19 (19.4)

   T2

30 (30.6)

   T3

42 (42.9)

   T4

7 (7.1)

AJCC staging group at initial diagnosis

   I

11 (11.2)

   II

24 (24.5)

   III

18 (18.4)

   IV

45 (45.9)

Fuhrman grade

   1

4 (4.1)

   2

49 (50.0)

   3

39 (39.8)

   4

6 (6.1)

Histology

   Predominant clear cell

87 (88.8)

   Non-clear cell

11 (11.2)

Sites of metastatic diseases

   Lung

70 (71.4)

   Liver

10 (10.2)

   Bone

18 (18.4)

   Lymph node

24 (24.5)

   Adrenal gland

12 (12.2)

   Other

12 (12.2)

Number of metastatic foci

   1

20 (20.4)

   2

29 (29.6)

   3

21 (21.4)

   >= 4

28 (28.6)

ECOG performance status

   0

56 (57.1)

   1

37 (37.8)

   2

4 (4.1)

   3

1 (1.0)