[Clinicopathological analysis of sinonasal ectopic meningioma]

To evaluate the diagnostic and therapeutic methods of sinonasal ectopic meningioma.

The clinical data of 8 patients treated in our department from Jan 1990 to Oct 2011 were retrospectively analysed. Among these patients, 5 cases were treated by lateral rhinotomy approach; 2 cases were treated by endoscopic plus modified Caldwell-Luc technique; 1 case was treated by endoscopic plus modified Caldwell-Luc technique. All patients were followed up postoperatively.

All patients had no complications after operation. All patients were followed up from six months to 22 years. Among them, two cases had recurred 18 months and one year postoperatively. The two cases did not recur after the second operation.

Although sinonasal ectopic meningioma is difficult to diagnose because of their infrequent occurrence in this ectopic site and of their non-specific clinical appearance. The final diagnosis rests on the histological examination. Immunohistochemical studies are helpful to establish the accurate diagnosis. Prognosis is excellent after complete surgical resection.