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Fig 4. Patient 13, a 46-year-old man status post 7 months of radiation therapy (70 Gy) for treatment of a squamous cell carcinoma of the left oropharynx and hypopharynx, with an enhancing ulceration with positive biopsy results (category 3) of the left pyriform sinus. A, Contrast-enhanced CT with an enhancing ulceration of the pyriform sinus (arrows). B, PET/CT with 18F-FDG activity (SUV, 4.6 mg/mL) along the posterior border of the ulceration (arrow).
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