PMC8299874_01
Diagnostic images and intraoral photographs: (a) Maximum intensity projection image obtained with F-18 fluorodeoxyglucose positron emission tomography showing intense uptake in the oral area (SUVmax 6.0, red arrow). (b) Coronal image obtained with F-18 fluorodeoxyglucose positron emission tomography/computed tomography showing intense uptake in the left mandibular area (red arrow). (c) Transverse image obtained with F-18 fluorodeoxyglucose positron emission tomography/computed tomography showing intense uptake in the left mandibular area (red arrow). (d) Intraoral photograph showing a bone-like tissue and swelling in the left mandibular gingiva. (e) Panoramic radiograph taken during long-term follow-up. The yellow arrow indicates the wisdom tooth in the left mandible.
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FDG PET/CT image. FDG PET/CT performed in 2015 demonstrated intense FDG uptake in the left mandibular area (SUVmax 6.0; Figure 1(a)-(c)), which was suggestive of malignancy. There was a bone-like hard tissue in the left mandibular gingiva, around which was swelling and pain on palpation (Figure 1(d)), suggesting radiation osteomyelitis or pericoronitis. Radiography showed the presence of a wisdom tooth (Figure 1(e)) at the site of FDG accumulation, and pericoronitis of the tooth was detected.
Disappearance of FDG accumulation during the subsequent patient follow-up.
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