| Outbound Relationships | Type | Target | Active | Characteristic | Refinability | Group | Values | 
| Malignant neoplasm of pelvis, sacrum or coccyx NOS | Is a | Malignant neoplasm of pelvic bones, sacrum and coccyx | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant neoplasm of pelvis, sacrum or coccyx NOS | Finding site | Anatomical structure | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Malignant neoplasm of pelvis, sacrum or coccyx NOS | Pathological process | Malignant neoplastic process | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant neoplasm of pelvis, sacrum or coccyx NOS | Finding site | Structure of innominate bone and/or sacrum and/or coccyx | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Malignant neoplasm of pelvis, sacrum or coccyx NOS | Associated morphology | Neoplasm | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Malignant neoplasm of pelvis, sacrum or coccyx NOS | Pathological process | Neoplastic process | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant neoplasm of pelvis, sacrum or coccyx NOS | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Malignant neoplasm of pelvis, sacrum or coccyx NOS | Finding site | Bone structure of sacrum | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Malignant neoplasm of pelvis, sacrum or coccyx NOS | Finding site | Bone structure of sacrum | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Malignant neoplasm of pelvis, sacrum or coccyx NOS | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 1 |  |