Cellular Angiofibroma
Supplemental Studies
Immunohistology
| Vimentin | positive |
| CD34 | 29/48 |
| Smooth muscle actin | 10/48 |
| Desmin | 4/48 |
| Estrogen receptor | 35% |
| Progesterone receptor | 55% |
| CD10 | 2/7 |
| S100 | negative |
| Rb | neg (lost) |
(EMA one case reported positive)
p16 multifocal or diffuse in cases with atypical cells or sarcomatoid areas
- Scattered weak to negative in ordinary cellular fibroma areas
