title: Teflon-induced granuloma: a source of false positive positron emission tomography and computerized tomography interpretation.
abstract: Patients diagnosed with malignancy often undergo combined positron emission tomography (PET) and computerized tomography (CT) to investigate possible metastases. This report presents a case in which, in the investigation of suspected pulmonary malignancy, combined PET and CT images suggested a malignant lesion at the level of the vocal fold. Biopsy of the lesion, however, confirmed the clinical diagnosis of a Teflon granuloma. The case highlights the potential for a false positive report during scanning of patients who have had vocal fold injection.
authors.affiliation: Department of Otolaryngology: Head & Neck Surgery, St Bartholomew's & The Royal London Hospitals, London EC1A 7BE, UK.
authors.forename: Richard J D
authors.initials: RJ
authors.lastname: Hewitt
authors.forename: Arvind
authors.initials: A
authors.lastname: Singh
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Wareing
mesh_terms: D000368:Aged; D003937:Diagnosis, Differential; D015745:Granuloma, Foreign-Body / Q000175:diagnosis*; D006801:Humans; D007818:Laryngeal Diseases / Q000175:diagnosis*; D007822:Laryngeal Neoplasms / Q000175:diagnosis; D008175:Lung Neoplasms / Q000175:diagnosis; D008297:Male; D011138:Polytetrafluoroethylene / Q000009:adverse effects*; D049268:Positron-Emission Tomography / Q000379:methods; D014057:Tomography, X-Ray Computed / Q000379:methods
chemical_list: D011138:Polytetrafluoroethylene