Sinonasal bölgede schvannom tarafından infiltre edilen osteom: radyolojik malign kuşkulu tümör

Osteoma infiltrated by schwannoma in sinonasal region: radiologically masquerading as a malign tumor

Neoplasms in sinonasal cavity are dominated by epithelial type. Sinonasal osteomas are common, benign, slow-growing, often asymptomatic neoplasms occurring mainly in the frontal and ethmoid sinuses. Peripheral nevre sheath tumors are soft tissue neoplasms rarely encountered in the sinonasal region. Schwannoma is a benign peripheral nevre sheath tumor. Here, we presented co-occurence of osteoma and schwannoma. So far, osteoma infiltrated by schwannoma in sinonasal region is not reported in English literature. Additionally it was masquerading as malignant tumor radiologically. The pathologist should be aware of a second soft-tissue tumor that may accompanied the radiologically suspicious malignant bone lesions.

Keywords:

Schwannoma, Osteoma, Sinonasal region,

PDF

___

Kumar S, Sayoo C. sinonasal schwannoma: a rare sinonasal neoplasm. Indian J Otolaryngol Head Neck Surg. 2017;69:425-27.
Batsakis JG. Tumors of the Peripheral Nervous System. 2nd edition. Baltimore: Williams and Wilkins. 1979;313-33.
EI-Naggar AK, Chan John KC, Grandis JR, Takata T, Slootweg PJ. WHO Classification of Head and Neck Tumours. World Health Organization Classification of Tumours. 4th edition. Lyon. IARC. 2017;48-50.
Leu YS, Chang KC. Extracranial head and neck schwannomas: A review of 8 years experience. Acta Otolaryngol. 2002;122:435-7.
Berlucchi M, Piazza C, Blanzuoli L, Nicolai P. Schwannoma of the nasal septum: a case report with review of literature. Eur Arch Otorhinolaryngol. 2000;257:402-05.
Lund VJ, Stammberger H, Nicolai P, Castelnuovo P, Beal T, Beham A at al. European position paper on endoscopic management of tumours of the nose, paranasal sinuses and skull base. Rhinol Suppl. 2010;22:1-143.
Buob D, Wacrenier A, Chevalier D, Aubert S, Quinchon JF, Gosselin B et al. Schwannoma of the sinonasal tract.a clinicopathologic and immunohistochemical study of 5 cases. Arch Pathol Lab Med. 2003;127:1196-99.
Gencarelli J, Rourke R, Ross T, Gravel DH, Purgina B, Jordan D et al.. Atypical presentation of sinonasal cellular schwannoma: a nonsolitary mass with osseous, orbital, and intracranial invasion. J Neurol Surg Rep. 2014;75:e144-8.
Mosalleum Esraa MA, Phillips VM. Schwannoma of the nasal cavity: A case report and a review. Sudan Medical Monitor. 2015;10:27-30.