Nodular Fasciitis
Supplemental Studies
Immunohistology
| Muscle specific actin | Positive |
| Smooth muscle actin | Positive |
| S100 | Negative |
| Desmin | Negative |
| Beta-catenin | Negative |
| ALK | Negative |
| Keratin | Negative |
| MyoD1 | Negative |
| Myogenin | Negative |
| Muscle specific actin | Positive |
| Smooth muscle actin | Positive |
| S100 | Negative |
| Desmin | Negative |
| Beta-catenin | Negative |
| ALK | Negative |
| Keratin | Negative |
| MyoD1 | Negative |
| Myogenin | Negative |