From: Prognostic value of MIB-1 proliferation index in solitary fibrous tumors of the pleura implemented in a new score – a multicenter study
Variables
Points
Mitoses ≥4/10 HPF
1
Mitoses <4/10 HPF (or Mitoses missing)
0
Tumor size ≥10 cm
Tumor size <10 cm (or tumor size missing)
MIB-1 ≥ 10%
MIB-1 < 10% (or MIB-1 missing)
Necrosis
No Necrosis (or necrosis missing)