Lateral Neck Bulging and Pain on Swallowing in a Young Man

A 28-year-old man presented with a bulge on the left side of his neck and severe stabbing pain during swallowing. He had a history of a neck contusion 1 year prior with subcutaneous bleeding that had improved. What is your diagnosis?
Source: JAMA Otolaryngology - Head and Neck Surgery - Category: ENT & OMF Source Type: research
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