NI-RADS primary site category 2a: superficial mucosal abnormality.

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Presentation transcript:

NI-RADS primary site category 2a: superficial mucosal abnormality. NI-RADS primary site category 2a: superficial mucosal abnormality. Primary T2 larynx squamous cell carcinoma status post chemoradiotherapy. A, CECT showed subtle irregularity of the anterior commissure and anterior true vocal cords bilaterally (arrow). B, Corresponding fused PET image shows focal mucosal uptake (arrow). After direct visualization revealed suspicious mucosal findings, the biopsy showed persistent disease. Although this lesion does demonstrate focal avid FDG uptake, it is in a special category of mucosal abnormality. In the published NI-RADS 1.0 by Aiken et al,5 these are scored as 2a because the linked management recommendation is direct visualization. D.A. Krieger et al. AJNR Am J Neuroradiol 2017;38:1193-1199 ©2017 by American Society of Neuroradiology