PMC6033246_01
Left cervical swelling (red circle) is seen on physical examination.
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On day 9, the patient developed neck swelling with approximately 5 cm soft mass (Figure 1) and inspiratory stridor and was referred to our department.
Posterior pharyngeal wall swelling was detected by preoperative laryngoscopy.
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Physical examination revealed swelling of the posterior pharyngeal wall, which caused extrinsic compression of the airway (Figure 2).
Computed tomography scan showed a cystic lesion on the left side of the neck. An air-fluid level could be detected within the cyst.
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Computed tomography (CT) (Figure 3) and magnetic resonance imaging (MRI) revealed a cystic lesion with air-fluid level, approximately 60 x 50 mm in size, on the left side of the neck, which extended from the epipharynx to the superior mediastinum.