Paradoxical vocal cord PET uptake
Citation, DOI, disclosures and case data
Kwong Y, Paradoxical vocal cord PET uptake. Case study, Radiopaedia.org (Accessed on 28 Mar 2023) https://doi.org/10.53347/rID-30765
At the time the case was submitted for publication Yune Kwong had no recorded disclosures.View Yune Kwong's current disclosures
2 Sep 2014
19 times, by 4 contributors - see full revision history and disclosures
PET-CT for staging of lung tumor.
Age: 65 years
From the case: Paradoxical vocal cord PET uptake
Loading Stack -
0 images remaining
Large lung tumor adjacent to the aortic arch, extending to the aorto-pulmonary window and the expected location of the left recurrent laryngeal nerve. On plain CT, there are features of left sided vocal cord palsy, with paramedian position of the cord and enlarged laryngeal ventricle (arrow). No increased PET uptake is seen in the paralyzed cord, consistent with absence of tumor there. There is increased PET uptake in the normal cord (arrow), secondary to increased physiological activity as a compensatory mechanism.
- 1. Kwong Y, Boddu S, Shah J. Radiology of vocal cord palsy. Clin Radiol. 2012;67 (11): 1108-14. doi:10.1016/j.crad.2012.03.008 - Pubmed citation
- 2. Lee M, Ramaswamy MR, Lilien DL et-al. Unilateral vocal cord paralysis causes contralateral false-positive positron emission tomography scans of the larynx. Ann. Otol. Rhinol. Laryngol. 2005;114 (3): 202-6. - Pubmed citation
- 3. Heller MT, Meltzer CC, Fukui MB et-al. Superphysiologic FDG Uptake in the Non-Paralyzed Vocal Cord. Resolution of a False-Positive PET Result with Combined PET-CT Imaging. Clin. Positron Imaging. 2000;3 (5): 207-211. Clin. Positron Imaging (link) - Pubmed citation