Imaging tumor size (OR 1.128, 95% CI 1.054–1.217, P = 0.001) and tumor density (OR 0.398, 95% CI 0.214–0.727, P = 0.003) were the CT signs that were associated with the expression level of Ki-67 in patients with GIST (Table 3). The gene discussed is MKI67; the disease is gastrointestinal stromal tumor.