Table 1
Clinicopathologic characteristics of patients with advanced metastatic RCC treated with any kind of nephrectomy and no nephrectomy
Characteristic Any nephrectomy No nephrectomy P
Number of patients (%) 129 (71.3) 52 (28.7)
Age, yr
Median 62 67.5 0.006*
Range 30–81 36–86
Sex
Female 33 15 0.780**
Male 96 37
PS
0 64 14 <0.001*
1 57 20
≥2 8 18
No. of metastatic organ sites
0(T4N0M0) 6 1 0.295*
1 82 22
2 17 6
≥3 24 23
Metastatic area
Lung 68 30 0.657**
Bone 46 13 0.227**
Lymph node 31 19 0.089**
Liver 4 7 0.008**
CNS 4 4 0.174**
Others 17 7 0.856*
Median 8.00 9.25 0.008*
Range 2.50– 24.0
Histopathology
Clear cell 109 17
Papillary 4 0
Chromophobe 1 0
Collecting-duct 4 0
Sarcomatoid change 3 5
Others or not determined 8 30
Tumor grading (Fuhrman) 0.205*
G1 4 1
G2 43 4
G3 57 7
G4 20 6
X 5 34

*Mann-Whitney U test; **Chi-square test.

Ito et al. BMC Cancer 2012 12:337   doi:10.1186/1471-2407-12-337

Open Data