Clinical Analysis of Sinonasal Inverted Papilloma according to the Staging System / 대한이비인후과학회지

ABSTRACT

BACKGROUND AND OBJECTIVES: The purpose of this work is to evaluate our results in the treatment of the nasal inverted papillomas according to staging system using a retrospective case series. SUBJECTS AND METHOD: Between March, 1997 and July, 2007,we treated 157 patients with nasal inverted papillomas. A retrospective assessment was performed to evaluate the demographic data, clinical presentations, and involved site of tumor. Inclusion criteria for the study required a histologically proven case of inverted papillomas and a minimum of 12 months follow-up period. All patients were staged according to the Krouse's staging system and a new staging system by Citardi et al. We compared the recurrence rate according to the tumor stage. RESULTS: The median age was 53.7 years (range 21 to 81 years) with males comprising 71%. The most frequent presenting complaint was nasal obstruction. The most common site of involvement was the lateral nasal wall. According to the Krouse's staging system, T1, T2, T3 and T4 were 29 (19.3%), 69 (46%), 51 (34%) and 1 (0.7%). According to the staging system by Citardi et. al., groups A, B and C were 98 (65.3%), 51 (34%) and 1 (0.7%). The recurrence rates of T1, T2, T3 and T4 were 3 (10.3%), 8 (11.6%), 8 (15.7%) and 1 (100%). The recurrence rates of group A, B and C were 11 (11.2%), 8 (15.7%) and 1 (100%). CONCLUSION: The Krouse's staging system, based on the involvement of IP, is a simple tool for grading IP. The new staging system by Citardi et. al. provides information about recurrence rates after surgery. Both staging system could provide important objective data for preoperative planning and prognosis.