| Outbound Relationships | Type | Target | Active | Characteristic | Refinability | Group | Values | 
| Malignant tumor of optic nerve and sheath | Is a | Neoplasm of optic nerve | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant tumor of optic nerve and sheath | Is a | Neoplasm of eye | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant tumor of optic nerve and sheath | Is a | Primary malignant neoplasm of cranial nerve | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant tumor of optic nerve and sheath | Is a | Primary malignant neoplasm of eye, primary (disorder) | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant tumor of optic nerve and sheath | Finding site | Optic nerve structure | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant tumor of optic nerve and sheath | Pathological process | Neoplastic process | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant tumor of optic nerve and sheath | Finding site | Structure of eye proper | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Malignant tumor of optic nerve and sheath | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Malignant tumor of optic nerve and sheath | Associated morphology | Malignant neoplasm, primary | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant tumor of optic nerve and sheath | Pathological process | Malignant neoplastic process | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Malignant tumor of optic nerve and sheath | Is a | Neoplasm of meninges | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant tumor of optic nerve and sheath | Is a | Malignant neoplasm of central nervous system | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant tumor of optic nerve and sheath | Is a | Malignant tumor of head and/or neck | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant tumor of optic nerve and sheath | Finding site | Anatomical structure | false | Inferred relationship | Existential restriction modifier | 3 |  | 
| Malignant tumor of optic nerve and sheath | Associated morphology | Neoplasm | false | Inferred relationship | Existential restriction modifier | 3 |  | 
| Malignant tumor of optic nerve and sheath | Finding site | Optic nerve sheath structure | true | Inferred relationship | Existential restriction modifier | 2 |  | 
| Malignant tumor of optic nerve and sheath | Is a | Neoplasm of cranial nerve | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant tumor of optic nerve and sheath | Is a | Malignant tumor of optic nerve sheath | true | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant tumor of optic nerve and sheath | Finding site | Optic nerve structure | true | Inferred relationship | Existential restriction modifier | 1 |  | 
| Malignant tumor of optic nerve and sheath | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Malignant tumor of optic nerve and sheath | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Malignant tumor of optic nerve and sheath | Is a | Malignant tumor of optic nerve | true | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant tumor of optic nerve and sheath | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Malignant tumor of optic nerve and sheath | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Malignant tumor of optic nerve and sheath | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Malignant tumor of optic nerve and sheath | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Malignant tumor of optic nerve and sheath | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Malignant tumor of optic nerve and sheath | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Malignant tumor of optic nerve and sheath | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Malignant tumor of optic nerve and sheath | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Malignant tumor of optic nerve and sheath | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Malignant tumor of optic nerve and sheath | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Malignant tumor of optic nerve and sheath | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Malignant tumor of optic nerve and sheath | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Malignant tumor of optic nerve and sheath | Associated morphology | Malignant neoplasm | true | Inferred relationship | Existential restriction modifier | 2 |  | 
| Malignant tumor of optic nerve and sheath | Associated morphology | Malignant neoplasm | true | Inferred relationship | Existential restriction modifier | 1 |  |