PMC7532843_01
axial post-contrast CT image showing a non-enhanced cystic mass in the right retropharyngeal space
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F1
The CT scan showed a right retropharyngeal mass which was hypodense and cystic. (Figure 1) and the MRI revealed a hyperintense signal on both T2 and T1 sequences that was associated to a moderate homogeneous enhancement (Figure 2).
MRI showing enhanced lymph node swelling in the right retropharyngeal space which doesn t dislocate the intenal carotid artery; a) axial T2 weighted with fat-suppressed; b) coronal T2 weighted with fat-suppressed
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F2
The CT scan showed a right retropharyngeal mass which was hypodense and cystic. (Figure 1) and the MRI revealed a hyperintense signal on both T2 and T1 sequences that was associated to a moderate homogeneous enhancement (Figure 2).
a post-treatment 131I whole body scan showed no uptake by any part of the body
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F3
The 131 iodine (I) whole body scan showed no uptake by any part of the body (Figure 3) and the neck ultrasound was normal.