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Controversies: Is There a Role for Positron-Emission Tomographic CT in the Initial Staging of Head and Neck Squamous Cell Carcinoma?

Suresh K. Mukherji and Carol R. Bradford


Figure 1
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  		Fig 1. T3N2 pyriform sinus carcinoma.

A, Axial PET-CT demonstrates avid FDG uptake in a right pyriform sinus carcinoma and a metastatic right cervical lymph node.

B, PET-CT of the chest shows a mediastinal mass with focal increased uptake. This was not detected on conventional radiography of the chest.


Figure 2
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  		Fig 2. Unknown primary detected with PET-CT.

A, Axial PET demonstrates and enlarged left-sided lymph node with avid FDG uptake. Biopsy revealed squamous cell carcinoma but there was no mass seen at endoscopy.

B, Contrast-enhanced CT shows no evidence of an aggressive focal mass.

C, PET-CT demonstrates abnormal focal uptake in the left tonsil. The patient underwent a left tonsillectomy and the pathology revealed squamous cell carcinoma.





Copyright © 2009 by the American Society of Neuroradiology. Print ISSN: 0195-6108 Online ISSN: 1936-959X