Table I.

Patient and tumor characteristics.

Characteristics	Number of patients
	n	(%)
Age
<70	46	45.1
≥70	56	54.9
Gender
Male	83	81.4
Female	19	18.6
Growth pattern
Papillary	66	64.7
Non-papillary	36	35.3
Tumor stage
Ta	34	33.3
T1	40	39.2
T2	16	15.7
T3	12	11.8
Tumor grade
Low	51	50
High	51	50

Ta, non-invasive tumors.