PMC8074671_01
Coronal (A), sagittal (B), and axial (C) views of 99mtechnetium sestamibi with SPECT/CT demonstrating the ectopic parathyroid adenoma.
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Because of suspicion of ectopic adenoma, MIBI SPECT/CT was performed, which showed abnormal focal uptake in the anterior mediastinum measuring 1.9 x 1.0 x 1.4 cm, correlating with an enhancing intrathymic nodule (Fig. 1).
Axial views of chest 4-dimensional CT demonstrating the ectopic parathyroid adenoma (arrow). A, Arterial phase. B, Delayed phase. CT = computed tomography.
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This finding was confirmed by 4-dimensional (4D) CT (Fig. 2).