Table 2.

MIB-1 labeling index and CD68-positive macrophage infiltrates.

Primary Immunohistochemical Investigation	CD68− Cells	CD68+ Cells	p-Value
MIB-1 labeling index < 9%	5 (83.3%)	1 (16.7%)	0.59
MIB-1 labeling index ≥ 9%	6 (60.0%)	4 (40.0%)
Immunohistochemical investigation in recurrent meningiomas [available in 14 patients]
MIB-1 labeling index < 10%	3 (50.0%)	3 (50.0%)	0.99
MIB-1 labeling index ≥ 10%	3 (37.5%)	5 (62.5%)
“−” constituting no to focal positive staining; “+” constituting elevated positive staining