Aiyer Ranjan G, Prashanth V, Ambani Kirti, Bhat Vadish S, Soni Geeta B
Department of E.N.T & Head-Neck Surgery, S.S.G. Hospital & Medical College, 390007 Baroda, Gujarat India ; 3/2 Jesal Apartment, Abhishek Colony, Race Cource, Vadodara, 390007 Baroda, Gujarat India.
Department of E.N.T & Head-Neck Surgery, S.S.G. Hospital & Medical College, 390007 Baroda, Gujarat India.
Indian J Otolaryngol Head Neck Surg. 2013 Aug;65(Suppl 2):384-7. doi: 10.1007/s12070-012-0565-y. Epub 2012 Sep 9.
Meningioma is the most common nonglial intracranial neoplasm, arising from meningocytes (arachnoid cap cells) of arachnoid granulation tissue and constitutes 15-20 % of all intracranial tumors. Approximately 6-17 % of all meningiomas can be found in extracranial or extra spinal sites. The head and neck is the most frequent location of extraneuraxial meningiomas, commonly seen as an extension of primary intracranial tumor (secondary extracranial meningioma). Less than 2 % of all meningiomas arise at a primary ectopic site (primary extracranial meningioma). Meningioma of nose and paranasal sinuses is a very rare tumor. The overall incidence is about 0.1 % of all tumors in the nose and sinuses. To date, very few cases of this primary extracranial meningioma of paranasal sinuses have been reported. In this report we are going to present three rare cases of primary extracranial meningioma of paranasal sinuses operated in our department over a period of 22 years (1986-2008).
脑膜瘤是最常见的非神经胶质颅内肿瘤，起源于蛛网膜颗粒组织的脑膜细胞（蛛网膜帽细胞），占所有颅内肿瘤的15% - 20%。所有脑膜瘤中约6% - 17%可发生于颅外或脊柱外部位。头颈部是颅外脑膜瘤最常见的部位，通常表现为原发性颅内肿瘤的延伸（继发性颅外脑膜瘤）。所有脑膜瘤中不到2%起源于原发性异位部位（原发性颅外脑膜瘤）。鼻窦脑膜瘤是一种非常罕见的肿瘤。其总体发病率约占鼻窦所有肿瘤的0.1%。迄今为止，原发性鼻窦颅外脑膜瘤的病例报道非常少。在本报告中，我们将呈现22年（1986 - 2008年）间在我科手术的3例罕见的原发性鼻窦颅外脑膜瘤病例。
