| Outbound Relationships | Type | Target | Active | Characteristic | Refinability | Group | Values | 
| Malignant neoplasm of skin of thumb | Is a | Neoplasm of skin of hand | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant neoplasm of skin of thumb | Is a | Primary malignant neoplasm of hand | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant neoplasm of skin of thumb | Is a | Malignant neoplasm of skin of upper limb and shoulder | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant neoplasm of skin of thumb | Pathological process | Neoplastic process | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant neoplasm of skin of thumb | Pathological process | Malignant neoplastic process | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant neoplasm of skin of thumb | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Malignant neoplasm of skin of thumb | Finding site | Skin of part of thumb | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant neoplasm of skin of thumb | Is a | Disorder of digit | true | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant neoplasm of skin of thumb | Finding site | Skin structure of thumb | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Malignant neoplasm of skin of thumb | Is a | Finding of thumb | true | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant neoplasm of skin of thumb | Is a | Neoplasm of hand | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant neoplasm of skin of thumb | Finding site | Skin structure of upper limb | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Malignant neoplasm of skin of thumb | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Malignant neoplasm of skin of thumb | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Malignant neoplasm of skin of thumb | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Malignant neoplasm of skin of thumb | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Malignant neoplasm of skin of thumb | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Malignant neoplasm of skin of thumb | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Malignant neoplasm of skin of thumb | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Malignant neoplasm of skin of thumb | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 2 |  | 
| Malignant neoplasm of skin of thumb | Is a | Neoplasm of skin of hand | true | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant neoplasm of skin of thumb | Finding site | Skin structure of thumb | true | Inferred relationship | Existential restriction modifier | 1 |  | 
| Malignant neoplasm of skin of thumb | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Malignant neoplasm of skin of thumb | Is a | Malignant neoplasm of skin of upper limb | true | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant neoplasm of skin of thumb | Is a | Neoplasm of soft tissue of hand | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant neoplasm of skin of thumb | Associated morphology | Malignant neoplasm | true | Inferred relationship | Existential restriction modifier | 1 |  |