Photodynamic diagnosis for follow-up of carcinoma in situ of the bladder

Figures & data

Table 1 Patient characteristics (mean ± SD)

Number of patients	49
Mean age (years)	70 ± 12
Time from last bladder instillation (days)	68 ± 28
Number of bladder instillations/patient (BCG)	16 ± 10
Bladder cancer history
TaG1 + CIS	3
TaG2 + CIS	5
T1G2 + CIS	2
T1G3 + CIS	12
Previous CIS alone	27

Abbreviations: BCG, Bacillus Calmette-Guerin; CIS, carcinoma in situ.

Table 2 Carcinoma in situ detection

Positive urinary cytology	15 (30.6%)
Total CIS diagnosed	18 (36.7%)
CIS diagnosed with PDD + Standard WL cystoscopy	4 (8.2%)
CIS diagnosed only with PDD	14 (28.5%)
CIS diagnosed with WL only	0
Overall PDD false positives	9 (33.3%)
Overall WL false positives	1 (7.1%)

Abbreviations: CIS, carcinoma in situ; PDD, photodynamic diagnosis; WL, white light.