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Copyright ©The Author(s) 2015.
World J Radiol. Nov 28, 2015; 7(11): 382-393
Published online Nov 28, 2015. doi: 10.4329/wjr.v7.i11.382
Figure 7
Figure 7 Positron emission tomography/computed tomography allows for detection for occult primary in a patient with multiple involved left neck nodes. A: PET/CT showing the initial presentation with multiple enlarged left neck nodes (white arrows); B: A conventional CT scan does not reveal a source of primary cancer; C: PET/CT demonstrated increased FDG uptake in the left base of tongue (white arrow) and a directed biopsy of this area revealed this as the primary site; D: IMRT treatment plan for this patient showing that the left base of tongue was included in the high-dose (70 Gy) volume while sparing uninvolved mucosal areas. IMRT: Intensity modulated radiation therapy; PET/CT: Positron emission tomography/computed tomography.