Angiomyofibroblastoma
Supplemental Studies
Immunohistology
| Desmin | Most cases positive |
| Smooth muscle actin | Occasional focal |
| Muscle specific actin | Occasional, focal |
| CD34 | Variable, about 50% |
| Factor XIIIa | Small spindle cells, some cases |
| Vimentin | Positive |
| Estrogen receptor | Positive most cases |
| Progesterone receptor | Positive most cases |
| S100 | Negative |
| Keratin | Negative |
| CD57 | Negative |
