Status: current, Sufficiently defined by necessary conditions definition status (core metadata concept). Date: 31-Jan 2002. Module: SNOMED CT core
Descriptions:
| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group |
| Benign neoplasm of mastoid air cells | Is a | True | Benign tumour of middle ear and mastoid | Inferred relationship | Some | |
| Benign neoplasm of middle ear | Is a | True | Benign tumour of middle ear and mastoid | Inferred relationship | Some | |
| Benign tumor of Eustachian tube | Is a | False | Benign tumour of middle ear and mastoid | Inferred relationship | Some | |
| Benign tumor of tympanic cavity | Is a | False | Benign tumour of middle ear and mastoid | Inferred relationship | Some | |
| Benign tumour of tympanic antrum | Is a | False | Benign tumour of middle ear and mastoid | Inferred relationship | Some | |
| Glomus neoplasm of mastoid (disorder) | Is a | True | Benign tumour of middle ear and mastoid | Inferred relationship | Some |
This concept is not in any reference sets