Prognostic Outcomes and Risk Factors for Patients with Renal Cell Carcinoma and Venous Tumor Thrombus after Radical Nephrectomy and Thrombectomy: The Prognostic Significance of Venous Tumor Thrombus Level

Table 4

Multivariate analysis of prognostic risk factors.

Covariate	HR (95% CI)		HR (95% CI)
	All patients		N0M0 patients
Gender	0.98 (0.49–1.95)	0.954	0.88 (0.28–2.76)	0.830
Age	0.99 (0.96–1.02)	0.391	0.99 (0.95–1.04)	0.714
Symptoms	1.22 (0.57–2.62)	0.611	2.28 (0.74–7.01)	0.152
Tumor size	1.06 (0.95–1.18)	0.280	1.07 (0.90–1.28)	0.459
Tumor thrombus level	1.58 (1.09–2.29)	0.016	2.12 (1.37–3.27)	0.001
Perinephric fat invasion	1.85 (0.97–3.52)	0.060	0.59 (0.21–1.66)	0.321
Adrenal gland invasion	4.91 (1.97–12.22)	0.001	8.04 (1.38–46.98)	0.021
N	2.60 (1.23–5.51)	0.013
M	4.14 (2.17–7.93)	<0.001
Histological subtype	0.94 (0.78–1.13)	0.491	0.85 (0.62–1.16)	0.305
Fuhrman grade	1.21 (0.66–2.21)	0.542	2.29 (0.88–5.98)	0.090