MKI67 and periventricular leukomalacia: Regarding PI (Fig 4a–4d), similar results were also obtained, with higher expression of Ki-67 antigen in the ALPPS than in the PVL group at 48 hours (25.65±11.34% vs. 52.42±12.80%, p<0.001), 8 days (14.46±5.98% vs. 23.73±9.11%, p<0.01) and 12 weeks (2.96±0.37 vs. 5.77±0.95, p<0.001).