Myofibroblastoma of the Breast
Supplemental Studies
Immunohistology
| Desmin | Focal to strong |
| Smooth muscle actin | focal |
| CD34 | Positive |
| CD99 | Positive |
| bcl2 | Positive |
| Vimentin | Positive |
| S100 | Negative |
| Keratin | Negative |
Genetic analysis
- One report of partial monosomy 13q and 16q
- Similar to chromosomal aberrations seen in spindle cell lipoma
