| Outbound Relationships | Type | Target | Active | Characteristic | Refinability | Group | Values | 
| Malignant neoplasm of skin of trunk, excluding scrotum | Is a | Neoplasm of skin of trunk | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant neoplasm of skin of trunk, excluding scrotum | Is a | Primary malignant neoplasm of skin | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant neoplasm of skin of trunk, excluding scrotum | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Malignant neoplasm of skin of trunk, excluding scrotum | Pathological process | Malignant neoplastic process | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant neoplasm of skin of trunk, excluding scrotum | Pathological process | Neoplastic process | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant neoplasm of skin of trunk, excluding scrotum | Finding site | Skin of part of trunk | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant neoplasm of skin of trunk, excluding scrotum | Is a | Malignant neoplasm of skin of trunk | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant neoplasm of skin of trunk, excluding scrotum | Finding site | Skin structure of trunk | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Malignant neoplasm of skin of trunk, excluding scrotum | Finding site | Skin structure of trunk | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Malignant neoplasm of skin of trunk, excluding scrotum | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Primary malignant neoplasm of skin of back | Is a | False | Malignant neoplasm of skin of trunk, excluding scrotum | Inferred relationship | Existential restriction modifier |  | 
| Primary malignant neoplasm of skin of breast | Is a | False | Malignant neoplasm of skin of trunk, excluding scrotum | Inferred relationship | Existential restriction modifier |  | 
| Primary malignant neoplasm of skin of buttock | Is a | False | Malignant neoplasm of skin of trunk, excluding scrotum | Inferred relationship | Existential restriction modifier |  | 
| Primary malignant neoplasm of skin of groin | Is a | False | Malignant neoplasm of skin of trunk, excluding scrotum | Inferred relationship | Existential restriction modifier |  | 
| Primary malignant neoplasm of skin of perineum | Is a | False | Malignant neoplasm of skin of trunk, excluding scrotum | Inferred relationship | Existential restriction modifier |  | 
| Primary malignant neoplasm of skin of umbilicus | Is a | False | Malignant neoplasm of skin of trunk, excluding scrotum | Inferred relationship | Existential restriction modifier |  | 
| Malignant neoplasm of skin of axillary fold | Is a | False | Malignant neoplasm of skin of trunk, excluding scrotum | Inferred relationship | Existential restriction modifier |  | 
| Malignant neoplasm of skin of chest, excluding breast | Is a | False | Malignant neoplasm of skin of trunk, excluding scrotum | Inferred relationship | Existential restriction modifier |  | 
| Malignant neoplasm of skin of abdominal wall | Is a | False | Malignant neoplasm of skin of trunk, excluding scrotum | Inferred relationship | Existential restriction modifier |  | 
| Ca skin - trunk | Is a | False | Malignant neoplasm of skin of trunk, excluding scrotum | Inferred relationship | Existential restriction modifier |  | 
| Malignant neoplasm of skin of trunk, excluding scrotum, NOS | Is a | False | Malignant neoplasm of skin of trunk, excluding scrotum | Inferred relationship | Existential restriction modifier |  |