References
1. Shahab R, Heliwell T, Jones AS. How we do it: a series of 114 primary pharyngeal space neoplasms. Clin Otolaryngol 2005;30(4):364–7.
2. Cohen SM, Burkey BB, Netterville JL. Surgical management of parapharyngeal space masses. Head Neck 2005;27(8):669–75.
3. Riffat F, Dwivedi RC, Palme C, Fish B, Jani P. A systematic review of 1143 parapharyngeal space tumors reported over 20 years. Oral oncology. 2014 May 1;50(5):421-30.
4. Kelder W, Ebrahimi A, Forest VI, Gao K, Murali R, Clark JR. Cutaneous head and neck squamous cell carcinoma with regional metastases: the prognostic importance of soft tissue metastases and extranodal spread. Annals of surgical oncology. 2012 Jan 1;19(1):274-9.