Comparison of proportions of COX-2 positivity in NPC, dysplastic epithelium, and normal epithelium
| Type of epithelium (n) | Number of COX-2 positive cases (%) | p Value |
|---|---|---|
| COX-2, cyclooxygenase 2; NPC, nasopharyngeal carcinoma. | ||
| NPC (85) | 60 (71%) | |
| Dysplastic epithelium (39) | 14 (36%) | 0.0004 |
| Normal epithelium (25) | 1 (4%) | 0.0051 |









