Table 3.

Comparison of conventional cytology with ROS cytology (initially diagnosed urothelial carcinomas)

	Conventional cytology				ROS cytology
Urothelial carcinoma	Positive	Suspicious	Negative	Sensitivity	Positive	Negative	Sensitivity
Low grade(n = 24)	9	7	8	35%	18	6	75%
High grade(n = 26)	21	1	2	88%	22	2	92%
Non-invasive papillary	10	8	8	39%	20	6	77%
(n = 26)
Superficially invasive	6	1	0	86%	6	1	86%
(n = 7)
Deep invasive	6	0	0	100%	6	0	100%
(n = 6)
Carcinoma in situ	8	0	1	89%	8	1	89%
(n = 10)
				Specificity			Specificity
Negative(n = 80)	6	13	72	90%	4	76	95%