Fig. 4

An example hierarchy generated by concept “Palate Neoplasm” (C4402) and some of its subtypes. New concept “hard palate neoplasm” could be derived by intersecting concept “Malignant Hard Palate Neoplasm” (C3528) and “Benign Hard Palate Neoplasm” (C4403), which has a potential supertype “Palate Neoplasm” (C4402)