INTRODUCTION: We present the cases registred from 1998 to 2003 and a revision of the bibliography. MATERIAL AND METHOD: In the section of Rhinology of a second level Hospital 11 patients affected by inverted papilloma type 1 of the OMS classification were diagnosed aged between 40 and 79, 9 men and 2 women. They were explored through endoscopy and biopsy and the exeresis of the lesion was done by endoscopic polipectomy with microdebrider (PEM). RESULTS: All the cases at stage I, II and III of the Krouse classification. Treated by CEN, 6 by mixed endonasal approach and through the canine fossa 4 by nasal approach only and 1 by Caldwell-Luc approach. The follow-up was done between 9 to 64 months and there was a recidive who was operated by open surgery and no one malignant transformation was seen. DISCUSSION: We coment the aspects related to etiology, the symptons and the surgical technics. CONCLUSIONS: We propose to stage the tumor and the realisation of a PEM with topic anesthesia with deep biopsies in all unilateral poly formations to avoid a retarded diagnosis and to be able to apply endoscopic technics.
INTRODUCTION: We present the cases registred from 1998 to 2003 and a revision of the bibliography. MATERIAL AND METHOD: In the section of Rhinology of a second level Hospital 11 patients affected by inverted papilloma type 1 of the OMS classification were diagnosed aged between 40 and 79, 9 men and 2 women. They were explored through endoscopy and biopsy and the exeresis of the lesion was done by endoscopic polipectomy with microdebrider (PEM). RESULTS: All the cases at stage I, II and III of the Krouse classification. Treated by CEN, 6 by mixed endonasal approach and through the canine fossa 4 by nasal approach only and 1 by Caldwell-Luc approach. The follow-up was done between 9 to 64 months and there was a recidive who was operated by open surgery and no one malignant transformation was seen. DISCUSSION: We coment the aspects related to etiology, the symptons and the surgical technics. CONCLUSIONS: We propose to stage the tumor and the realisation of a PEM with topic anesthesia with deep biopsies in all unilateral poly formations to avoid a retarded diagnosis and to be able to apply endoscopic technics.