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AJNR - American Journal of Neuroradiology

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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

View larger version (138K): [in this window] [in a new window]   Fig 1. Bruning syringe for Teflon injection.

View larger version (54K): [in this window] [in a new window]   Fig 2. PET-CT with 2-cm hypermetabolic mass in the left skull base.

View larger version (141K): [in this window] [in a new window]   Fig 3. CT scan demonstrating hyperattenuated material within the left parapharyngeal fat.

View larger version (94K): [in this window] [in a new window]   Fig 4. T1 pregadolinium (A) and postgadolinium (B) with fat saturation demonstrating a mass isointense to muscle in the left parapharyngeal fat with peripheral rim enhancement.