Table 1 Characteristics of the patients and tumors included in the study

Sex

male/female

56/48

Age in years

median (range)

65 (25–85)

Tumor diameter in mm

median (range)

80 (30–250)

Survival in months

Range

0-130

Tumor stage (WHO)

I

26

(As derived from TNM)

II

15

III

30

IV

33

Tumor grade (Fuhrman)

1

4

2

14

3

60

4

26

RCC type by histology

Clear cell

81

Papillary

15

Chromophobe

7

Unclassified

1

Patients with known metastasis at diagnosis

35

Patients who died from the disease

57

Patients dead from other causes

16

Patients alive at last follow-up (with disease)

31 (3)