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Illustrative sequential images of lateral cervical radiographs before surgery (a) and at 2 (b), and 4 weeks (c) after surgery. C3-percentage of prevertebral soft tissue swelling and C4-percentage of prevertebral soft tissue swelling at 2 days after surgery was 88% and 92%, respectively. Laryngoscopy at 3 days after surgery revealing slow clearance at the level of the epiglottis, suggesting dysphagia (d), which was improved by a fasting treatment (e)
