PMC9363666_01
Parathyroid ultrasound showing a hypoechoic nodule (*) on the left side of the suprasternal fossa.
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F1
After admission to our hospital, a parathyroid ultrasound indicated a hypoechoic nodule on the left side of the suprasternal fossa (Figure 1).
MIBI examination. (A, B) Large soft tissue density nodule accompanied by eggshell calcification in the superior mediastinum, located behind the innominate artery and beside the trachea; (C, D) soft tissue density nodule in the suprasternal fossa.
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F2
Methoxyisobutylisonitrile (MIBI) examination showed a 3.2 cm x 3.0 cm soft tissue density nodule accompanied by eggshell calcification in the superior mediastinum, located behind the innominate artery and beside the trachea (Figures 2A, B). MIBI also showed an approximately 1.2 cm x 1.0 cm soft tissue density nodule in the suprasternal fossa (Figures 2C, D).
Large parathyroid in the right anterior mediastinum after removal. (A) Length of the mass was approximately 7 cm; (B) width was approximately 3.5 cm.
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F3
This second mass was 7 cm x 3.5 cm in size and weighed 23.72 g (Figures 3A, B).
Results of the 1-year follow-up. (A) iPTH level; (B) blood calcium level.
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F4
During 1-year follow-up, the patient's iPTH was well controlled and the blood calcium remained within normal limits (Figure 4).