PMC2631536_01
Initial magnetic resonance imaging of the neck showing right sided cystic hygroma, pushing the neck structures to the left.
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F1
An MRI demonstrated "a cystic lesion in the nasopharynx and right neck which inferiorly followed the course of the right carotid artery probably consistent with cystic hygroma" [fig. 1].
Follow-up magnetic resonance imaging of neck showing increase in size of the cystic hygroma with further compression of the structures of the neck.
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F2
MRA were done. MRI showed increase in size of right posterior retropharyngeal to right neck cystic mass measuring 4.1 cm and displacing the trachea and oropharynx to the left and the right carotid artery posteriorly and laterally [fig. 2]. MRA showed the right common carotid artery displaced posteriorly and laterally without definite hemodynamic stenosis.