1. 1) Das S, Das D, Ashraf K, et al. : An unusual nasal polyp: skull base meningioma with extracranial extension into the nasal cavity. Br J Hosp Med (Lond) 73: 46-47, 2012.
2. 2) Louis DN, Scheithauer BW, Budka H, et al. : Meningiomas Pathology and genetics of tumours of the nervous sysem (ed by Kleihues P and Cavenee WK). pp 176-184, IARC Press, Lyon, 2000.
3. 3) Fernández Liesa R, Rivarés Esteban J, Pérez Obón J, et al. : Primary meningioma of the nose and the paranasal sinus. Ann Otolaryngol Chir Cervicofac 108: 34-37, 1991.
4. 4) Friedman CD, Costantino PD, Teitelbaum B, et al. : Primary extracranial meningiomas of the head and neck. Laryngoscope 100: 41-48, 1990.
5. 5) Arias Marzán F, de Lucas Carmona G, Alvarez Flórez M, et al. : Extracranial meningiomas of the paranasal sinuses. Acta Otorhinolaringol Esp 61: 238-240, 2010.