| Outbound Relationships | Type | Target | Active | Characteristic | Refinability | Group | Values | 
| Primary malignant neoplasm of peripheral nerve of head, face and/or neck | Is a | Neoplasm of peripheral nerve of head AND/OR neck | true | Inferred relationship | Existential restriction modifier |  |  | 
| Primary malignant neoplasm of peripheral nerve of head, face and/or neck | Is a | Malignant tumor of peripheral nerve | false | Inferred relationship | Existential restriction modifier |  |  | 
| Primary malignant neoplasm of peripheral nerve of head, face and/or neck | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Primary malignant neoplasm of peripheral nerve of head, face and/or neck | Pathological process | Neoplastic process | false | Inferred relationship | Existential restriction modifier |  |  | 
| Primary malignant neoplasm of peripheral nerve of head, face and/or neck | Pathological process | Malignant neoplastic process | false | Inferred relationship | Existential restriction modifier |  |  | 
| Primary malignant neoplasm of peripheral nerve of head, face and/or neck | Finding site | Structure of head and/or neck | false | Inferred relationship | Existential restriction modifier |  |  | 
| Primary malignant neoplasm of peripheral nerve of head, face and/or neck | Associated morphology | Neoplasm | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Primary malignant neoplasm of peripheral nerve of head, face and/or neck | Finding site | Peripheral nerve structure | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Primary malignant neoplasm of peripheral nerve of head, face and/or neck | Is a | Primary malignant neoplasm of nervous system | false | Inferred relationship | Existential restriction modifier |  |  | 
| Primary malignant neoplasm of peripheral nerve of head, face and/or neck | Associated morphology | Malignant neoplasm, primary | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Primary malignant neoplasm of peripheral nerve of head, face and/or neck | Finding site | Structure of nervous system | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Primary malignant neoplasm of peripheral nerve of head, face and/or neck | Is a | Primary malignant neoplasm of peripheral nerve | true | Inferred relationship | Existential restriction modifier |  |  | 
| Primary malignant neoplasm of peripheral nerve of head, face and/or neck | Associated morphology | Malignant neoplasm, primary | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Primary malignant neoplasm of peripheral nerve of head, face and/or neck | Finding site | Peripheral nerve structure | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Primary malignant neoplasm of peripheral nerve of head, face and/or neck | Is a | Malignant tumor of head and/or neck | true | Inferred relationship | Existential restriction modifier |  |  | 
| Primary malignant neoplasm of peripheral nerve of head, face and/or neck | Finding site | Structure of peripheral nerve of head and neck | true | Inferred relationship | Existential restriction modifier | 1 |  | 
| Primary malignant neoplasm of peripheral nerve of head, face and/or neck | Associated morphology | Malignant neoplasm | true | Inferred relationship | Existential restriction modifier | 1 |  | 
| Primary malignant neoplasm of peripheral nerve of head, face and/or neck | Pathological process | Malignant proliferation of primary neoplasm | true | Inferred relationship | Existential restriction modifier | 1 |  | 
| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Primary malignant neoplasm of peripheral nerves of head | Is a | True | Primary malignant neoplasm of peripheral nerve of head, face and/or neck | Inferred relationship | Existential restriction modifier |  | 
| Primary malignant neoplasm of peripheral nerves of neck | Is a | True | Primary malignant neoplasm of peripheral nerve of head, face and/or neck | Inferred relationship | Existential restriction modifier |  | 
| Primary malignant neoplasm of abducens nerve | Is a | True | Primary malignant neoplasm of peripheral nerve of head, face and/or neck | Inferred relationship | Existential restriction modifier |  | 
| Primary malignant neoplasm of accessory nerve | Is a | True | Primary malignant neoplasm of peripheral nerve of head, face and/or neck | Inferred relationship | Existential restriction modifier |  | 
| Primary malignant neoplasm of acoustic nerve | Is a | True | Primary malignant neoplasm of peripheral nerve of head, face and/or neck | Inferred relationship | Existential restriction modifier |  | 
| Primary malignant neoplasm of facial nerve | Is a | True | Primary malignant neoplasm of peripheral nerve of head, face and/or neck | Inferred relationship | Existential restriction modifier |  | 
| Primary malignant neoplasm of hypoglossal nerve | Is a | True | Primary malignant neoplasm of peripheral nerve of head, face and/or neck | Inferred relationship | Existential restriction modifier |  | 
| Primary malignant neoplasm of oculomotor nerve | Is a | True | Primary malignant neoplasm of peripheral nerve of head, face and/or neck | Inferred relationship | Existential restriction modifier |  | 
| Primary malignant neoplasm of olfactory nerve | Is a | True | Primary malignant neoplasm of peripheral nerve of head, face and/or neck | Inferred relationship | Existential restriction modifier |  | 
| Primary malignant neoplasm of trigeminal nerve | Is a | True | Primary malignant neoplasm of peripheral nerve of head, face and/or neck | Inferred relationship | Existential restriction modifier |  | 
| Primary malignant neoplasm of trochlear nerve | Is a | True | Primary malignant neoplasm of peripheral nerve of head, face and/or neck | Inferred relationship | Existential restriction modifier |  | 
| Primary malignant neoplasm of peripheral nerves of face | Is a | True | Primary malignant neoplasm of peripheral nerve of head, face and/or neck | Inferred relationship | Existential restriction modifier |  | 
| Malignant nerve sheath neoplasm of peripheral nerve of head and neck | Is a | False | Primary malignant neoplasm of peripheral nerve of head, face and/or neck | Inferred relationship | Existential restriction modifier |  | 
| Primary malignant neoplasm of glossopharyngeal nerve | Is a | True | Primary malignant neoplasm of peripheral nerve of head, face and/or neck | Inferred relationship | Existential restriction modifier |  | 
| Primary malignant nerve sheath neoplasm of peripheral nerve of head and neck | Is a | True | Primary malignant neoplasm of peripheral nerve of head, face and/or neck | Inferred relationship | Existential restriction modifier |  |