| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Oropharynx TNM finding | Is a | False | Upper aerodigestive tract TNM finding | Inferred relationship | Existential restriction modifier |  | 
| Lip and oral cavity TNM finding | Is a | False | Upper aerodigestive tract TNM finding | Inferred relationship | Existential restriction modifier |  | 
| Hypopharyngeal TNM finding | Is a | False | Upper aerodigestive tract TNM finding | Inferred relationship | Existential restriction modifier |  | 
| Nasopharynx TNM finding | Is a | False | Upper aerodigestive tract TNM finding | Inferred relationship | Existential restriction modifier |  | 
| Supraglottis TNM finding | Is a | False | Upper aerodigestive tract TNM finding | Inferred relationship | Existential restriction modifier |  | 
| Glottis TNM finding | Is a | False | Upper aerodigestive tract TNM finding | Inferred relationship | Existential restriction modifier |  | 
| Subglottis TNM finding | Is a | False | Upper aerodigestive tract TNM finding | Inferred relationship | Existential restriction modifier |  | 
| Maxillary sinus TNM finding | Is a | False | Upper aerodigestive tract TNM finding | Inferred relationship | Existential restriction modifier |  | 
| Nasal cavity and ethmoid sinus TNM finding | Is a | False | Upper aerodigestive tract TNM finding | Inferred relationship | Existential restriction modifier |  | 
| pN1: Metastasis in a single ipsilateral lymph node, 3 cm or less in greatest dimension (upper aerodigestive tract) | Is a | False | Upper aerodigestive tract TNM finding | Inferred relationship | Existential restriction modifier |  | 
| pN2a: Metastasis in a single ipsilateral lymph node, more than 3 cm but not more than 6 cm in greatest dimension (upper aerodigestive tract) | Is a | False | Upper aerodigestive tract TNM finding | Inferred relationship | Existential restriction modifier |  | 
| pN2c: Metastasis in bilateral or contralateral lymph nodes, none more than 6 cm in greatest dimension (upper aerodigestive tract) | Is a | False | Upper aerodigestive tract TNM finding | Inferred relationship | Existential restriction modifier |  | 
| pN2b: Metastasis in multiple ipsilateral lymph nodes, none more than 6 cm in greatest dimension (upper aerodigestive tract) | Is a | False | Upper aerodigestive tract TNM finding | Inferred relationship | Existential restriction modifier |  | 
| pN3: Metastasis in a lymph node, more than 6 cm in greatest dimension (upper aerodigestive tract) | Is a | False | Upper aerodigestive tract TNM finding | Inferred relationship | Existential restriction modifier |  | 
| pN1: Unilateral metastasis in lymph node(s), 6 cm or less in greatest dimension, above the supraclavicular fossa (nasopharynx) | Is a | False | Upper aerodigestive tract TNM finding | Inferred relationship | Existential restriction modifier |  | 
| pN2: Bilateral metastasis in lymph node(s), 6 cm or less in greatest dimension, above the supraclavicular fossa (nasopharynx) | Is a | False | Upper aerodigestive tract TNM finding | Inferred relationship | Existential restriction modifier |  | 
| pN3: Metastasis in a lymph node(s), more than 6 cm in dimension, and/or to supraclavicular fossa (nasopharynx) | Is a | False | Upper aerodigestive tract TNM finding | Inferred relationship | Existential restriction modifier |  | 
| Major salivary gland TNM finding | Is a | False | Upper aerodigestive tract TNM finding | Inferred relationship | Existential restriction modifier |  |