MKI67 and vascular neoplasm: The primary tumors pathological characteristics of recurrent patients were more aggressive, manifesting more frequently as capsular invasion (29% vs. 6% in non-recurrent patients, p=0.023), vascular tumor emboli happened more frequently (17% vs. 0%, p=0.008), and both the average Ki-67 count [3% (1%, 4%) vs. 1% (1%, 3%), p=0.021] or the proportion of patients with an average Ki-67 count ≥ 3% was higher in recurrent patients (53% vs. 23%, p=0.049) (Table 4).