S. Singh, P. Tripathi, G. Khatri, K. K. Handa, and A. C. Handa, “Retropharyngeal lipoma as a treatable cause of severe obstructive sleep apnea in a middle-aged male ”, Int J Otorhinolaryngol Head Neck Surg, vol. 11, no. 6, pp. 741–744, Nov. 2025.