Résumé
Cholesterol granuloma is usually described in association with middle ear diseases, but has also been reported to be found in the paranasal sinuses and orbit. It is currently thought that impaired drainage, hemorrhage and inadequate ventilation play significant roles in its pathogenesis. Histopathologic examination of cholesterol granuloma shows abundant foreign body giant cells, cholesterol crystal clefts, histiocytes surrounded by a dense fibrous capsule. We report our endoscopic surgical experience in one female patient with a large cholesterol granuloma of the sphenoid sinus presenting bilateral visual involvement and brain invasion.
Sujets)
Femelle , Humains , Encéphale , Cholestérol , Drainage , Oreille moyenne , Cellules géantes à corps étrangers , Granulome , Hémorragie , Histiocytes , Orbite , Sinus de la face , Sinus sphénoïdal , VentilationRésumé
Neurilemmoma is a benign tumor which may develop from the nerve sheath of the cranial, sympathetic, and peripheral nerves. This tumor is characteristically solitary and well-capsulated. About 25% of this tumor occurs in the head and neck region and the acoustic nerve is most frequently involved, but neurilemmoma of the larynx is rare. Recently, authors experienced a case of neurilemmoma occured in the paraglottic space of the larynx. The tumor was successfully removed through lateral thyrotomy approach. So we report this case with literature review.