In particular, Cozzi et al. [16] retrospectively evaluated 27 patients affected by different pulmonary neuroendocrine tumor subtypes (typical and atypical carcinoids, large and small cell neuroendocrine carcinoma) reporting a significant difference in enhanced CT in multiple first-order and higher-order radiomics features in the correlation with Ki-67 index values, while for the presence of metastases, only Skewness and Cluster Shade were significant on enhanced CT. The gene discussed is MKI67; the disease is small cell carcinoma.