Table 1.
Expression of COX-2 in thyroid lesions
| Diagnosis (No of cases) | + | +/− | − |
|---|---|---|---|
| Papillary carcinoma (19) | 19 | 0 | 0 |
| Follicular carcinoma (8) | 6 | 1 | 1 |
| Hürthle cell carcinoma (2) | 1 | 1 | 0 |
| Medullary carcinoma (2) | 1 | 1 | 0 |
| Anaplastic carcinoma (1) | 0 | 1 | 0 |
| Follicular adenoma (14) | 10 | 1 | 3 |
| Hürthle cell adenoma (4) | 3 | 1 | 0 |
| Nodular hyperplasia (8) | 0 | 0 | 8 |
| Hashimoto’s thyroiditis (3) | 3 | 0 | 0 |
| Graves’ disease (3) | 0 | 0 | 3 |
| Normal tissue (20) | 0 | 0 | 20 |
+:
strong to moderate staining of all or most of epithelial cells
+/−:
weak or focal staining of epithelial cells
−:
no staining of epithelial cells.