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Case Report Case: In June 2016,a sixty-year-old woman with a headache more than half one year,was admitted to Sun Yat-sen University Cancer Center,Guangzhou,China.Magnetic resonance imaging(MRI)showed an enlarged para-pharyngeal neoplasm(PPN)on the left side of retropharyngeal space(RPS),2.4*1.9cm in size and with edge enhancement on the T1-weighted contrast-enhanced imaging.