Table 1.

Data collection of patient and tumor characteristics

Patient
	No. of patients	77
	Age (yrs)	63.1 (39–83)
	Sex (male/female)	48/29
	follow-up times (months)	19 (3–43)
Tumor
	Histology (clear cell/cell/sarcomatoid differentiation)	57/11/9
	Histological Fuhrman grading (G1/G2/G3/G4)	9/32/29/7
	pT stage (T1/T2/T3/T4)	24/19/32/2
	pN stage (T0/N1/N2)	62/12/3
	Microscopic vascular invasion (v0/v1)	28/49
	Metastasis (M0/M1)	52/25
Surgery	Radical nephrectomy	77
	with cavotomy with thrombectomy for > T3b tumor	(9)
	with RPLND* for > N1 tumor	(15)

RPLND*: retroperitoneal lymph node dissection.