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. 2019 Jul 7;2019:1893047. doi: 10.1155/2019/1893047

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Copyright © 2019 Sergiy V. Kushchayev et al.

This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Mapping of the metastatic lymph nodes in medullary thyroid carcinoma. In 2015 patient underwent thyroidectomy for medullary carcinoma (a) and 2 years later presented with elevated calcitonin level (304 pg/ml). Ultrasound of the neck, CT of the neck, and MRI of the neck were all false negative (not shown); however, 18F-FDOPA-PET/CT (c), 18F-FDG-PET/CT, and 68Ga-DOTATATE-PET/CT were positive for a metastatic lymph node. Please note that patients with neck pathology should ideally be scanned with arms down (in this case the study was obtained with patient's arms up as it was a whole-body imaging for detection mediastinal metastases).