Table 1.

Patients characteristics.

Variants	Group 1	Group 2
	(n = 16)	(n = 16)
Age (years)	68.9 ± 7.4	69.4 ± 6.9
Preoperative PSA	3.3 ± 1.92	4.8 ± 3.9
Total prostate volume	45.9 ± 18.7	48.2 ± 16.5
T-zone volume	21.4 ± 13.0	20.3 ± 12.1
Resection volume	19.8 ± 15.3	18.6 ± 16.6

PSA means prostate specific antigen. T-zone means transitional zone.