From: Simultaneous diagnosis of liver PEComa in a family with known Li–Fraumeni syndrome: a case report
| High risk features Folpe et al. |
|---|
| Size > 5 cm |
| Infiltrative growth pattern |
| High nuclear grade and cellularity |
| Mitotic rate > 1/5 HPF |
| Necrosis |
| Vascular invasion |