The Journal of International
Advanced Otology

EAONO/JOS Joint Consensus Statements on the Definitions, Classification and Staging of Middle Ear Cholesteatoma


The Ipswich Hospital NHS Trust, Heath Road, Suffolk, United Kingdom IP4 5PD


Department of Otolaryngology-Head and Neck Surgery, University of Miyazaki 5200 Kihara, Kiyotake, Miyazaki 889-1692, Japan


Department of Otolaryngology, Medical University of Bialystok ul. Sklodowskiej 24 A, 15-276 Bialystok, Poland


Department of Otorhinolaryngology, Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo 105-8461, Japan


Department of Otorhinolaryngology, Bielefeld Academic Teaching Hospital, Bielefeld, Germany


Department of Otolaryngology, Hyogo College of Medicine, Hyogo, Japan


Philip van Leydenlaan 15 Radboud University Hospital, 6500 HB Njmegen, Netherlands


Minatoku, Tokyo 105-8461, Japan


Department of Otolaryngology-Head and Neck Surgery, Eskişehir Osmangazi University School of Medicine, Eskişehir, Turkey


Department of Otology and Skull Base, Azienda Ospedaliera Universiteria Senese, Siena, Italy


Department of Otolaryngology, Bayındır Hospital, Ankara, Turkey

J Int Adv Otol 2017; 13: 1-8
DOI: 10.5152/iao.2017.3363
Read: 8212 Downloads: 3972 Published: 03 September 2019


The European Academy of Otology and Neurotology (EAONO) has previously published a consensus document on the definitions and classification of cholesteatoma. It was based on the Delphi consensus methodology involving the broad EAONO membership. At the same time, the Japanese Otological Society (JOS) had been working independently on the “Classification and Staging of Cholesteatoma.” EAONO and JOS then decided to collaborate and produce a joint consensus document. The EAONO/JOS joint consensus on “Definitions, Classification and Staging of Middle Ear Cholesteatoma” was formally presented at the 10th International Conference on Cholesteatoma and Ear Surgery in Edinburgh, June 5–8, 2016. The international otology community who attended the consensus session was given the chance to debate and give their support or disapproval. The statements on the “Definitions of Cholesteatoma” received 89% approval. The “Classification of Cholesteatoma” received almost universal approval (98%). The “EAONO/JOS Staging System on Middle Ear Cholesteatoma” had a majority of approval (75%). Some international otologists wanted to see more prognostic factors being incorporated in the staging system. In response to this, the EAONO/JOS steering group plans to set up an “International Otology Outcome Working Group” to work on a minimum common otology data set that the international otology community can use to evaluate their surgical outcome. This will generate a large database and help identify relevant prognostic factors that can be incorporated into the staging system in future revisions.

EISSN 2148-3817