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World J Radiol. May 28, 2014; 6(5): 177-191
Published online May 28, 2014. doi: 10.4329/wjr.v6.i5.177
Figure 12
Figure 12 Synchronous second primary malignancy in the head and neck region. A T4b right retromolar trigone squamous cell carcinoma involving the masticator space (blue arrow) was seen on positron emission tomography/computed tomography (PET/CT) (A). There was another second primary tumor in the right aryepiglottic fold (green arrows) causing no symptoms, demonstrated by both PET/CT (B and C) and contrast-enhanced CT (D).