title: Exogenous lipoid pneumonia secondary to Vaseline application to the tracheostomy in a laryngectomy patient: PET/CT and MR imaging findings.
abstract: A 67-year-old female ex-smoker was referred to our hospital after chest radiographs revealed a nonresolving opacity in the right lower lung. Her past medical history was significant for laryngeal cancer. A whole-body positron emission tomography/computed tomography (CT) confirmed an ill-defined fluorodeoxyglucose-avid peribronchial opacity in the right middle and inferior lobes. The CT component of the study showed focal areas of low attenuation within the lung opacity; these focal areas followed fat signal intensity on a magnetic resonance study, confirming the suspicion of exogenous lipoid pneumonia. The patient admitted to applying petroleum jelly (Vaseline) to her tracheostomy in order to moisturize the area around the stoma.
authors.affiliation: Department of Radiology, Hospital Universitario Ramón y Cajal, 28034 Madrid, Spain. luisgorospe@yahoo.com
authors.forename: Luis
authors.initials: L
authors.lastname: Gorospe
authors.forename: José Ignacio
authors.initials: JI
authors.lastname: Gallego-Rivera
authors.forename: Asunción
authors.initials: A
authors.lastname: Hervás-Morón
mesh_terms: D000305:Adrenal Cortex Hormones / Q000009:adverse effects; D000368:Aged; D005260:Female; D006801:Humans; D007825:Laryngectomy; D008279:Magnetic Resonance Imaging / Q000379:methods*; D064847:Multimodal Imaging / Q000379:methods*; D010577:Petrolatum / Q000009:adverse effects*; D011017:Pneumonia, Lipid / Q000139:chemically induced* / Q000175:diagnosis* / Q000188:drug therapy; D049268:Positron-Emission Tomography; D014057:Tomography, X-Ray Computed; D014139:Tracheostomy / Q000009:adverse effects*; D016896:Treatment Outcome
chemical_list: D000305:Adrenal Cortex Hormones; D010577:Petrolatum