Current state of usage of the Classification and Staging System of Cholesteatoma proposed by the Japan Otological Society

Abstract

Current state of usage of the Classification and Staging System of Cholesteatoma proposed by the Japan Otological Society was evaluated by reviewing articles in which the system was used. Number of use of the　system in articles gradually increased and the utilization purpose ranged widely, suggesting that this system has potentials to estimate pathogenesis, surgical indication and postoperative result of the cholesteatoma by common standard. Continuous revision and consensus development of the system should be required for the universalistic usage.