PMC4278091_01
Case 1. 58-year-old male with difficulty in swallowing was diagnosed with squamous cell carcinoma of right tonsil. a) Maximum Intensity Projection (MIP) image shows tonsillar SCC infiltration in both lobes of the thyroid gland (arrows). b) Axial CT image for attenuation correction and anatomic localization. c) Axial PET image shows diffuse tracer uptake in both lobes of the thyroid gland (arrows). d) Axial PET/CT fusion image reveals SUVmax of the right and left thyroid lobes was 7.5 and 5.9, respectively (arrows).
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F1
A 3.4 cm mass was found in the right thyroid gland, which exhibited irregularity, causing deviation of the underlying trachea [Figure 1].
PMC4278091_02
Case 2. 66-year-old male complaining of a mass in the neck was diagnosed with supraglottic squamous cell carcinoma. a) Maximum Intensity Projection (MIP) image shows supraglottic SCC metastasis in both lobes of the thyroid gland (arrows). b) CT image for attenuation correction and anatomic localization. c) Axial PET image shows intense metabolic activity in both lobes (arrows). d) Axial PET/CT fusion image reveals SUVmax of the right thyroid lobe was 20.3 and SUVmax of the left lobe was 7 (arrows).
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F2
FDG-PET/CT in January 2014, a new intensely hypermetabolic, multifocal, infiltrative mass was found in multiple areas of the thyroid gland [Figure 2]. FNA of both lobes of thyroid gland revealed supraglottic SCC.