Table 1.
Staining patterns.
| Biopsy proven lesion | Samples | Staining: epithelial antigen clone Ber-EP4 | Staining: epithelial specific antigen clone VU-1D9 |
|---|---|---|---|
| Basal cell carcinoma | 24 | 24 diffusely positive | 24 diffusely positive |
| Trichoepithelioma | 8 | 8 diffusely positive | 8 diffusely positive |
| Actinic keratosis | 12 | 12 negative | 12 negative |
| Squamous cell carcinoma in situ | 7 | 7 negative | 4 negative 3 focal positive staining in lower half of epidermis |
| Squamous cell carcinoma | 11 | 10 negative 1 focally positive with basal layer staining |
9 negative 1 focally positive 1 diffusely positive |
| Seborrheic keratosis | 16 | 16 negative | 16 negative |
| Lichen planus like keratosis | 6 | 6 negative | 6 negative |
| Nevi | 11 | 11 negative | 11 negative |
| Hemangioma | 2 | 2 negative | 2 negative |
| Inverted follicular keratosis | 5 | 5 negative | 5 negative |
| Sebaceous adenoma/hyperplasia | 6 | 5 negative 1 focal positive |
4 negative 2 focal positive |
| Merkel cell carcinoma | 4 | 4 diffusely positive | 4 diffusely positive |