Table II.
Prevalence of urothelial carcinoma and the sensitivity of FISH by smoking status.
| Urothelial carcinoma-positive cases detected with FISH | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Characteristic | Urothelial carcinoma confirmed by histology | Overall Low-grade carcinoma | High-grade carcinoma | ||||||||||||
| Smoking status | Total, n | +, n | -, n | Prevalence, % | +, n | -, n | Sen, % | Total, n | +, n | -, n | Sen, % | Total, n | +, n | -, n | Sen, % |
| Current or previous smoker | 40 | 31 | 9 | 77.5 | 24 | 7 | 77.4 | 17 | 14 | 3 | 82.4 | 14 | 10 | 4 | 71.4 |
| ≥30 pack-years | 20 | 18 | 2 | 90.0 | 14 | 4 | 77.8 | 13 | 10 | 3 | 76.9 | 5 | 4 | 1 | 80.0 |
| Non-smoker | 79 | 42 | 37 | 53.2 | 34 | 8 | 82.9 | 16 | 11 | 5 | 68.9 | 26 | 23 | 3 | 88.5 |
FISH, fluorescence in situ hybridization; Sen, sensitivity.