18F-DOPA PET/CT in Orbital Metastasis From Medullary Thyroid Carcinoma

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A 53-year-old-woman is being followed up for a sporadic medullary thyroid carcinoma that was initially treated surgically. Nine years later, a progressive increase in calcitonin levels along with headaches was observed. An orbital metastasis from medullary thyroid carcinoma was diagnosed by performing an 18F-DOPA PET/CT. The orbital lesion was treated by an external beam radiation. Four months later, an MRI revealed a global morphological stability and a reduction in calcitonin levels.

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