otosalpingitis A eustachian tube disorder which involves inflammation of the mucous membrane of the cartilagenous portion of the eustachian tube caused by acute nasopharyngitis, infection from some pathogenic microbes or trauma of the tube. Eustachian salpingitis UMLS_CUI:C0155428 ICD9CM:381.5 ICD10CM:H68.0 Eustachian tube salpingitis SNOMEDCT_US_2025_09_01:194266009 disease_ontology DOID:2000 eustachian tube disease