PMC4320791_01
PET-CT scan showing (a) hypermetabolic enlarged thyroid gland, (b) hypermetabolic left cervical lymph node, and (c) hypermetabolic focus in right side of manubrium (indicated by arrows).
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Computed tomography (CT) and F-18-FDG-positron emission tomography (PET) whole body scans (from skull vertex to upper thighs) were done to evaluate the extent of disease and revealed aggressive thyroid carcinoma with metastases to the manubrium and left cervical levels II-IV and supraclavicular lymph nodes (Figures 1(a)-1(c)).
MRI brain (T2-weighted, contrast, and coronal) showing (a) pituitary involvement and (b) invasion into left cavernous sinus (indicated by arrows).
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Repeat MRI imaging of the pituitary gland showed enlargement of the pituitary gland with mildly thickened infundibular stalk and a stable left cavernous sinus mass measuring 25 x 27 x 22 mm with encasement of the cavernous portion of the left internal carotid artery (Figures 2(a) and 2(b)).
PMC4320791_02
(a) MRI pituitary (T1-weighted, contrast, and coronal) showing pituitary mass (long arrow) with mass effect on the optic chiasm (short arrow). (b) MRI pituitary (T1-weighted, contrast, and sagittal) showing presence of increased signal intensity in the pituitary mass, representing presence of blood products (long arrow).
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