| Outbound Relationships | Type | Target | Active | Characteristic | Refinability | Group | Values | 
| [X]Malignant neoplasm of peritoneum, unspecified | Is a | Primary malignant neoplasm of the peritoneum | false | Inferred relationship | Some |  |  | 
| [X]Malignant neoplasm of peritoneum, unspecified | Finding site | Anatomical structure | false | Inferred relationship | Some | 1 |  | 
| [X]Malignant neoplasm of peritoneum, unspecified | Associated morphology | Malignant neoplasm, primary | false | Inferred relationship | Some |  |  | 
| [X]Malignant neoplasm of peritoneum, unspecified | Finding site | Structure of serous membrane of peritoneum (body structure) | false | Inferred relationship | Some | 1 |  | 
| [X]Malignant neoplasm of peritoneum, unspecified | Associated morphology | Neoplasm | false | Inferred relationship | Some | 1 |  | 
| [X]Malignant neoplasm of peritoneum, unspecified | Pathological process | Neoplastic process | false | Inferred relationship | Some |  |  | 
| [X]Malignant neoplasm of peritoneum, unspecified | Finding site | Entire body wall | false | Inferred relationship | Some |  |  | 
| [X]Malignant neoplasm of peritoneum, unspecified | Pathological process | Malignant neoplastic process | false | Inferred relationship | Some |  |  | 
| [X]Malignant neoplasm of peritoneum, unspecified | Is a | Malignant tumor of peritoneum | false | Inferred relationship | Some |  |  | 
| [X]Malignant neoplasm of peritoneum, unspecified | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Some | 1 |  | 
| [X]Malignant neoplasm of peritoneum, unspecified | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Some | 1 |  | 
| [X]Malignant neoplasm of peritoneum, unspecified | Finding site | Structure of serous membrane of peritoneum (body structure) | false | Inferred relationship | Some | 1 |  |