| Outbound Relationships | Type | Target | Active | Characteristic | Refinability | Group | Values | 
| Malignant neoplasm of lip, oral cavity and/or pharynx | Is a | Malignant neoplastic disease | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant neoplasm of lip, oral cavity and/or pharynx | Pathological process | Malignant neoplastic process | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant neoplasm of lip, oral cavity and/or pharynx | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Malignant neoplasm of lip, oral cavity and/or pharynx | Finding site | Lip, oral cavity and pharynx (combined site) | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant neoplasm of lip, oral cavity and/or pharynx | Is a | Malignant tumor of head and/or neck | true | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant neoplasm of lip, oral cavity and/or pharynx | Finding site | Structure of head and/or neck | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Malignant neoplasm of lip, oral cavity and/or pharynx | Is a | Neoplasm of digestive tract | true | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant neoplasm of lip, oral cavity and/or pharynx | Is a | Mouth and/or pharynx finding | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant neoplasm of lip, oral cavity and/or pharynx | Is a | Neoplasm of head | false | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant neoplasm of lip, oral cavity and/or pharynx | Finding site | Structure of mouth and/or pharynx | true | Inferred relationship | Existential restriction modifier | 1 |  | 
| Malignant neoplasm of lip, oral cavity and/or pharynx | Is a | Disorder of upper digestive tract | true | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant neoplasm of lip, oral cavity and/or pharynx | Finding site | Structure of mouth and/or pharynx | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Malignant neoplasm of lip, oral cavity and/or pharynx | Associated morphology | Malignant neoplasm of primary, secondary, or uncertain origin | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Malignant neoplasm of lip, oral cavity and/or pharynx | Is a | Malignant neoplasm of digestive system | true | Inferred relationship | Existential restriction modifier |  |  | 
| Malignant neoplasm of lip, oral cavity and/or pharynx | Associated morphology | Malignant neoplasm | true | Inferred relationship | Existential restriction modifier | 1 |  | 
| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Carcinoma of lip, oral cavity and/or pharynx | Is a | True | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Malignant neoplasm of other and ill-defined sites within the lip, oral cavity and pharynx | Is a | False | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Malignant neoplasm of other sites of lip, oral cavity and pharynx | Is a | False | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Malignant neoplasm of lip, oral cavity and pharynx NOS | Is a | False | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Primary malignant neoplasm of salivary gland duct | Is a | False | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Overlapping malignant neoplasm of lip, oral cavity and/or pharynx | Is a | False | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Malignant tumor of salivary gland | Is a | False | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Squamous cell carcinoma of mouth | Is a | True | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Primary malignant neoplasm of cheek | Is a | False | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Metastatic malignant neoplasm to mouth | Is a | True | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Malignant tumor of submandibular gland | Is a | False | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Malignant tumor of retromolar area | Is a | False | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Malignant tumor of oral cavity | Is a | True | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Malignant neoplasm of pharynx | Is a | True | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Malignant neoplasm of skin of cheek, external | Is a | False | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Basal cell carcinoma of nasolabial groove | Is a | False | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Adenoid cystic carcinoma of submandibular gland | Is a | False | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Mucoepidermoid carcinoma of submandibular gland | Is a | False | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Malignant neoplasm of gum and contiguous sites | Is a | True | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Malignant epithelial neoplasm of cheek | Is a | False | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Malignant neoplasm of border of tongue | Is a | False | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Malignant tumor of anterior two-thirds of tongue | Is a | False | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Malignant tumor of gum | Is a | False | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Primary malignant neoplasm of lateral portion of floor of mouth | Is a | False | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Malignant tumor of frenum linguae | Is a | False | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Malignant tumor of lip | Is a | True | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Malignant neoplasm of dorsal surface of tongue | Is a | False | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Primary malignant neoplasm of palatine bone | Is a | False | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Primary adenocarcinoma of palate | Is a | False | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Malignant tumor of hard palate | Is a | False | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Malignant tumor of uvula | Is a | False | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Metastatic malignant neoplasm to soft palate | Is a | False | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Malignant tumor of floor of mouth | Is a | False | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Malignant tumor of soft palate | Is a | True | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Malignant melanoma of oral cavity | Is a | True | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Metastatic carcinoma to lip, oral cavity and/or pharynx | Is a | True | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Malignant neoplasm of lip, oral cavity and pharynx NOS | Is a | False | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Malignant neoplasm of other sites of lip, oral cavity and pharynx | Is a | False | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  | 
| Malignant neoplasm of other and ill-defined sites within the lip, oral cavity and pharynx | Is a | False | Malignant neoplasm of lip, oral cavity and/or pharynx | Inferred relationship | Existential restriction modifier |  |