title: False-positive positron-emission tomography-CT of a Teflon granuloma in the parapharyngeal space occurring after treatment for a patulous eustachian tube.
abstract: This report presents a 55-year-old woman who underwent 2 Teflon injections in 1971 for a patulous eustachian tube. The patient returned in 2006 with a bloody left otorrhea. A positron-emission tomography-CT scan demonstrated a 2-cm hypermetabolic parapharyngeal mass, initially interpreted as a skull base tumor. Repeat neck CT confirmed a 2-cm hyperattenuated left parapharyngeal granulomatous mass. This is the first reported case of a Teflon granuloma presenting as a false-positive parapharyngeal mass.
authors: Department of Radiology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095-1721, USA. ckirsch@mednet.ucla.edu
authors: C F E
authors: CF
authors: Kirsch
authors: J D
authors: JD
authors: Suh
authors: R B
authors: RB
authors: Lufkin
authors: R F
authors: RF
authors: Canalis
mesh_terms: D004427:Ear Diseases / Q000628:therapy; D005064:Eustachian Tube / Q000002:abnormalities; D005189:False Positive Reactions; D005260:Female; D015745:Granuloma, Foreign-Body / Q000139:chemically induced* / Q000175:diagnosis*; D006801:Humans; D008875:Middle Aged; D010608:Pharyngeal Diseases / Q000139:chemically induced* / Q000175:diagnosis*; D010610:Pharyngeal Neoplasms / Q000175:diagnosis; D011138:Polytetrafluoroethylene / Q000009:adverse effects* / Q000627:therapeutic use; D049268:Positron-Emission Tomography / Q000379:methods*; D014057:Tomography, X-Ray Computed / Q000379:methods*
chemical_list: D011138:Polytetrafluoroethylene
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