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Fig. 2 | Insights into Imaging

Fig. 2

From: FDG-PET/CT pitfalls in oncological head and neck imaging

Fig. 2

a Axial PET/CT image reveals asymmetrical FDG uptake in the nasopharynx (arrow) in a patient with SCC of the floor of the mouth. Opacification of the right maxillary sinus due to mucous retention (asterisk). b Axial T2-weighted MR image at the same level depicts symmetrical lymphoid tissue within the nasopharynx without underlying pathology. Endoscopy confirmed absence of tumour. Mucous retention in the right maxillary sinus (asterisk)

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