Table 2. Patients characteristics.

Mean age (range) years	58.0 (38–83)
Male/female	69/32
T stage
T1	43
T2	19
T3	36
T4	3
Grade
1	34
2	58
3	8
Unknown	1
Histological type
Clear cell	76
Granular cell	7
Spindle cell	3
Pleomorphic	4
Bellini duct	1
Mixed	10