Expression of inducible nitric oxide synthase (i-NOS) in the epithelium and stroma of benign, borderline, and malignant phyllodes tumours
| i-NOS isoform expression | Benign | Borderline | Malignant |
|---|---|---|---|
| Epithelium | |||
| Absent | 5 (5%) | 2 (4%) | 5 (22%) |
| Weak | 41 (42%) | 13 (28%) | 4 (17%) |
| Moderate | 8 (8%) | 3 (6%) | 3 (13%) |
| Strong | 43 (45%) | 29 (62%) | 11 (48%) |
| Total | 97 (100%) | 47 (100%) | 23 (100%) |
| Stroma | |||
| Absent | 75 (77%) | 20 (42%) | 10 (43%) |
| Weak | 17 (18%) | 13 (28%) | 3 (13%) |
| Moderate | 4 (4%) | 9 (19%) | 6 (26%) |
| Strong | 1 (1%) | 5 (11%) | 4 (18%) |
| Total | 97 (100%) | 47 (100%) | 23 (100%) |