Surgical management of sinonasal inverted papillomas through endoscopic approach
2007
We defined a standardized approach to surgery of sinonasal inverted papillomas (IP) for adequate and safe resection. A cohort of 65 patients treated from January 1995 to December 2005 at a single institution was retrospectively analyzed (mean follow-up: 28 months; range 1–132). The extension of the tumor was evaluated on clinical findings and computed tomography (CT) scan and/or resonance magnetic imaging (RMI). External and endoscopic surgical approaches were compared according to tumor extension, rate of local recurrence. Univariate analysis was used to review the impact on disease-free survival of factors related to the histopathological findings and the treatment. Endoscopic (alone or combined with transantral approach) and external surgery were used in 46 patients (71%) and 19 patients, respectively. Endoscopic approach (34/46) was performed to control IP in the nasal fossa, the ostiomeatal complex, the sphenoid sinus. It was combined with Caldwell-Luc procedure (12/46) for tumor extent into the lateral part of the maxillary sinus. The mean time for recurrences to occur was 19 months with range of 5–35 months. The rate of local recurrence was 17.6% (6/34) in endoscopic approach alone, 8.3% in endoscopic approach combined with a Caldwell-Luc procedure and 15.8% (3/19) in external approach. Tumor extension, excision with safe margins, associated malignancy or dysplasia have no significant impact on disease-free survival regardless of surgical procedure. On the basis of imaging evaluation and peroperative view of tumor extent, we propose a surgical strategy in which endoscopic approach could be used on the first attempt by trained surgeons. RMI is very useful to determine acute extent of the disease.
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