case_images: PMC4246633_01
case_images: (A) No tumor was visible on the CT axial scan. (B) PET CT axial scan revealed a tonsillar tumor (right side). CT, computed tomography; PET, positron emission tomography.
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case_images: Based on positron emission tomography (PET)-computed tomography (CT) scans, a suspected primary tumor in the right tonsil was included in the differential diagnosis (Fig. 1).
case_images: (A) MRI T2 axial scan revealed a suspected tumor recurrence on the right side of tongue. (B) MRI coronal scan of the tumor of the right side of the tongue. MRI, magnetic resonance imaging.
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case_images: MRI scans indicated local disease recurrence (Fig. 2).
case_images: Positron emission tomography-computed tomography axial scan did not reveal any tumor recurrence.
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case_images: Another PET-CT was performed (Fig. 3), however, the results did not indicate a malignancy.