| Outbound Relationships | Type | Target | Active | Characteristic | Refinability | Group | Values | 
| Overlapping malignant lesion of retroperitoneum and peritoneum | Is a | Malignant tumor of peritoneum and retroperitoneum | false | Inferred relationship | Existential restriction modifier |  |  | 
| Overlapping malignant lesion of retroperitoneum and peritoneum | Pathological process | Malignant neoplastic process | false | Inferred relationship | Existential restriction modifier |  |  | 
| Overlapping malignant lesion of retroperitoneum and peritoneum | Finding site | Abdominopelvic cavity structure | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Overlapping malignant lesion of retroperitoneum and peritoneum | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier |  |  | 
| Overlapping malignant lesion of retroperitoneum and peritoneum | Is a | Primary malignant neoplasm | false | Inferred relationship | Existential restriction modifier |  |  | 
| Overlapping malignant lesion of retroperitoneum and peritoneum | Finding site | Anatomical structure | false | Inferred relationship | Existential restriction modifier | 3 |  | 
| Overlapping malignant lesion of retroperitoneum and peritoneum | Associated morphology | Neoplasm | false | Inferred relationship | Existential restriction modifier | 3 |  | 
| Overlapping malignant lesion of retroperitoneum and peritoneum | Associated morphology | Malignant neoplasm, primary | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Overlapping malignant lesion of retroperitoneum and peritoneum | Is a | Primary malignant neoplasm of trunk | false | Inferred relationship | Existential restriction modifier |  |  | 
| Overlapping malignant lesion of retroperitoneum and peritoneum | Finding site | Retroperitoneal compartment structure | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Overlapping malignant lesion of retroperitoneum and peritoneum | Finding site | Peritoneum | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Overlapping malignant lesion of retroperitoneum and peritoneum | Associated morphology | Neoplasm, malignant, uncertain whether primary or metastatic | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Overlapping malignant lesion of retroperitoneum and peritoneum | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Overlapping malignant lesion of retroperitoneum and peritoneum | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Overlapping malignant lesion of retroperitoneum and peritoneum | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Overlapping malignant lesion of retroperitoneum and peritoneum | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 3 |  | 
| Overlapping malignant lesion of retroperitoneum and peritoneum | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Overlapping malignant lesion of retroperitoneum and peritoneum | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Overlapping malignant lesion of retroperitoneum and peritoneum | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Overlapping malignant lesion of retroperitoneum and peritoneum | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Overlapping malignant lesion of retroperitoneum and peritoneum | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Overlapping malignant lesion of retroperitoneum and peritoneum | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Overlapping malignant lesion of retroperitoneum and peritoneum | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Overlapping malignant lesion of retroperitoneum and peritoneum | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Overlapping malignant lesion of retroperitoneum and peritoneum | Finding site | Peritoneal cavity structure | false | Inferred relationship | Existential restriction modifier |  |  |