A rare case of a branchial cyst in the parapharyngeal space was reported. The patient was a 22-year-old male who complained of swelling on the right side of the pharynx. When the patient was first examined, the right palatine tonsil was found to be projecting forward, and swelling of the soft palate and the right palatopharyngeal arch were evident. Based on CT, MRI and angiography findings, the tumor detected in his right parapharyngeal space was suspected to be cystic and neurogenic. The tumor was completely removed through an external incision, and pathological examination revealed the tumor to be brancial cyst. Pathological diagnosis of parapharyngeal tumors, in addition to the pathogenesis and type of branchial cyst and surgical treatment of parapharyngeal tumors were discussed.
