aspiration pneumonitis lipid pneumonia An aspiration pneumonitis resulting from the aspiration of lipids. It is the result of a foreign body-type reaction to the presence of lipid material within the lung parenchyma. It is caused by inhalation of nasal drops with oil base or cosmetic oil and aspiration of mineral oil when used as a laxative agent. MESH:D011017 UMLS_CUI:C0032298 ICD10CM:J69.1 DOID:13015 disease_ontology DOID:3241 Lipoid pneumonitis SNOMEDCT_US_2020_03_01:196038008 Exogenous lipoid pneumonia