| Outbound Relationships | Type | Target | Active | Characteristic | Refinability | Group | Values | 
| Malignant plasma cell neoplasm, extramedullary plasmacytoma | Is a | Plasmacytoma | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant plasma cell neoplasm, extramedullary plasmacytoma | Finding site | Hematopoietic system structure | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant plasma cell neoplasm, extramedullary plasmacytoma | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant plasma cell neoplasm, extramedullary plasmacytoma | Finding site | Lymphoid system structure | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant plasma cell neoplasm, extramedullary plasmacytoma | Finding site | Leukocyte | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant plasma cell neoplasm, extramedullary plasmacytoma | Pathological process | Neoplastic process | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant plasma cell neoplasm, extramedullary plasmacytoma | Pathological process | Malignant neoplastic process | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant plasma cell neoplasm, extramedullary plasmacytoma | Associated morphology | Proliferation | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Malignant plasma cell neoplasm, extramedullary plasmacytoma | Finding site | Plasma cell | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant plasma cell neoplasm, extramedullary plasmacytoma | Finding site | Lymphocytic tissue structure | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Malignant plasma cell neoplasm, extramedullary plasmacytoma | Finding site | Hematopoietic system structure | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant plasma cell neoplasm, extramedullary plasmacytoma | Associated morphology | White blood cell abnormality | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant plasma cell neoplasm, extramedullary plasmacytoma | Is a | Plasmacytoma | true | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant plasma cell neoplasm, extramedullary plasmacytoma | Associated morphology | Plasmacytoma, extramedullary (not occurring in bone) | true | Inferred relationship | Existential restriction modifier | 1 |  |