| Parameters | Number of patients n = % |
| Location of strictures: |
|
| Upper-third | 9 (18%) |
| Mid-third | 5 (10%) |
| Lower-third | 6 (12%) |
| Multiple | 30 (60%) |
| Types of stricture: |
|
| Simple | 15 (30%) |
| Complex | 35 (70) |