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AJNR - American Journal of Neuroradiology

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American Journal of Neuroradiology 28:1371-1372, August 2007
DOI 10.3174/ajnr.A0554
© 2007 American Society of Neuroradiology

Case Report
HEAD & NECK

False-Positive Positron-Emission Tomography-CT of a Teflon Granuloma in the Parapharyngeal Space Occurring after Treatment for a Patulous Eustachian Tube

C.F.E. Kirsch^a, J.D. Suh^b, R.B. Lufkin^a and R.F. Canalis^b

^a Department of Radiology David Geffen School of Medicine, University of California Los Angeles, Los Angeles, Calif
^b Department of Otolaryngology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, Calif

Address correspondence to Claudia Kirsch, MD, 10833 Le Conte Ave, BL-428, CHS, Los Angeles, CA, 90095-1721; e-mail: ckirsch{at}mednet.ucla.edu

SUMMARY: 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.