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AJNR - American Journal of Neuroradiology

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Teflon-Induced Granuloma: A False-Positive Finding with PET Resolved with Combined PET and CT

Rita A Yeretsian^a, Todd M. Blodgett^a, Barton F Branstetter IV^a,b, Michelle M Roberts^c and Carolyn C. Meltzer^a,d,e

^a Department of Radiology, University of Pittsburgh Medical Center, Pittsburgh, PA
^b Department of Otolaryngology, University of Pittsburgh Medical Center, Pittsburgh, PA
^c Department of Endocrinology, University of Pittsburgh Medical Center, Pittsburgh, PA
^d Department of Psychiatry, University of Pittsburgh Medical Center, Pittsburgh, PA
^e Department of Neurology, University of Pittsburgh Medical Center, Pittsburgh, PA

View larger version (88K): [in a new window]   FIG 1. Coronal (left) and sagittal (right) views acquired with PET. Increased FDG uptake just left of midline in the anterior neck (arrows) is shown.

View larger version (70K): [in a new window]   FIG 2. Top left, Initial CT image of the neck shows an amorphous area of high attenuation in the left medialized vocal cord (arrow). Top right corresponds to the area of increased FDG uptake (arrow) shown by combined PET and CT. Bottom left shows CT findings acquired 6 months later; no change in high attenuation is noted. Bottom right shows combind CT and PET findings; no change in FDG uptake (arrow) is noted.