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Fig. 6B —42-year-old man with medullary thyroid carcinoma and family
history of multiple endocrine neoplasia (MEN) type IIa. Axial low dose CT
image (top) and fused SPECT-CT image (bottom) in same
patient localizes uptake in left upper neck to nonpathologically enlarged
cervical lymph node (arrows). Nodal metastasis was confirmed at
surgery.