Differential expression of ki-67 and p27 in cholesteatoma compared to skin tissue predicts the prognosis of adult acquired cholesteatoma

Abstract

BACKGROUND: The aim of this study was to compare the differential Ki-67 and p27 staining properties of acquired cholesteatoma in adult patients for prognostic analysis. METHODS: Forty-two adult patients with acquired cholesteatoma were enrolled. The cholesteatoma and matched meatal skin tissues of the patients were immunostained with Ki-67 and p27 antibodies. Canal wall down mastoidectomy was performed in all patients. The differential staining properties––positive staining in the cholesteatoma and negative staining in the skin tissue (C+S-), negative staining in the cholesteatoma and positive staining in the skin tissue(C-S+)––were compared for bone erosion scores (BES), stage, and recurrence rates. RESULTS: Isolated findings in the cholesteatoma tissues, without matching with the skin tissues, demonstrated that stage and recurrence rates were not related to findings in the cholesteatoma tissues (P ˃.05). However, C+S-for Ki-67 and C-S+ for p27 are risk factors for worse prognosis including advanced stage (P