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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 20
Figure 20 Failure of treatment due to distant metastasis. A T4aN2cM0 right base of tongue squamous cell carcinoma (red arrow) with bilateral level IIa metastatic lymphadenopathy (white and yellow arrows) seen on positron emission tomography/computed tomography (PET/CT) at initial staging (A and B). The patient received chemoradiation. PET/CT (C and D) performed at 3 mo after treatment showed new lung metastases (blue arrow).