Table 2 The rate of patency was classified into severity of blockage
| Â | Severity | Number | Patency (%) |
|---|---|---|---|
Pre-saccal | Complete obstruction | 45 | 43 (95.6) |
Partial obstruction | 10 | 9 (90.0) | |
Post-saccal | Complete obstruction | 65 | 54 (83.1) |
Partial obstruction | 8 | 8 (100.0) |