Narayana, M. L.; Mohiyuddin, S. M. A.; Viswambharan, V.; Gaur, U.; Swethadri, G. K. A Rare Case of Atypical Lipoma in Retropharyngeal Space and Review of Literature. Int J Otorhinolaryngol Head Neck Surg 2019, 5, 1708-1712.