Fleur A Ten Tije1, Sietze Alkema2, Lisa van der Putten3, Jan Pieter Koopman4, Joeri Buwalda5, Sophia E Kramer2, Robert Jan Pauw6, Paul Merkus2. 1. Department of Otorhinolaryngology-Head and Neck Surgery, Section Ear and Hearing, Amsterdam University Medical Centers, Amsterdam Public Health Research Institute, Vrije Universiteit Amsterdam, De Boelelaan, VUmc, P.O. box 7057, 1007 MB, Amsterdam, The Netherlands. f.tentije@amsterdamumc.nl. 2. Department of Otorhinolaryngology-Head and Neck Surgery, Section Ear and Hearing, Amsterdam University Medical Centers, Amsterdam Public Health Research Institute, Vrije Universiteit Amsterdam, De Boelelaan, VUmc, P.O. box 7057, 1007 MB, Amsterdam, The Netherlands. 3. Department of Otorhinolaryngology-Head and Neck Surgery, Noordwest Ziekenhuisgroep, Alkmaar, Den Helder, The Netherlands. 4. Department of Otorhinolaryngology-Head and Neck Surgery, Haga Ziekenhuis, The Hague, The Netherlands. 5. Department of Otorhinolaryngology-Head and Neck Surgery, Deventer Ziekenhuis, Deventer, The Netherlands. 6. Department of Otorhinolaryngology-Head and Neck Surgery, Erasmus University Medical Center, Rotterdam, The Netherlands.
Abstract
PURPOSE: Differences in the definition and classification of cholesteatoma hinders comparing of surgical outcomes of cholesteatoma. Uniform registration is necessary to allow investigators to share and compare their findings. For many years surgical cholesteatoma procedures were divided into two main groups: canal wall up mastoidectomy (CWU) and canal wall down mastoidectomy (CWD). Recently, mastoid obliteration can be added to both procedures. Because of great variation within these main groups, the International Otology Outcome Group (IOOG) proposed the new SAMEO-ATO classification system to categorize tympanomastoid operations. The aim of our study was to correlate the mastoid bone extirpation (M-stage) with the contemporary (CWU, CWD with or without obliteration) system. METHODS: Demographic characteristics and type of performed surgery were registered for 135 cholesteatoma patients from sixteen hospitals, both secondary and tertiary care institutions, across the Netherlands. In addition, the surgical reports were collected, retrospectively classified according to the contemporary system and the new system and compared. Correlations of the outcomes were calculated. RESULTS: In total, there were 112 CWU and 14 CWD (both with or without obliteration) suitable for correlation analysis. Z test for correlation between the M-stage and CWU procedure was significant for M1a and M1b procedure and significant for M2c with the CWD procedure. CONCLUSION: The newly proposed SAMEO-ATO classification seems to be more detailed in the registration of surgical procedures than surgeons currently are used to. All M-stages of the SAMEO-ATO system are correlating well to the standard CWU and CWD except one 'in between' M-stage.
PURPOSE: Differences in the definition and classification of cholesteatoma hinders comparing of surgical outcomes of cholesteatoma. Uniform registration is necessary to allow investigators to share and compare their findings. For many years surgical cholesteatoma procedures were divided into two main groups: canal wall up mastoidectomy (CWU) and canal wall down mastoidectomy (CWD). Recently, mastoid obliteration can be added to both procedures. Because of great variation within these main groups, the International Otology Outcome Group (IOOG) proposed the new SAMEO-ATO classification system to categorize tympanomastoid operations. The aim of our study was to correlate the mastoid bone extirpation (M-stage) with the contemporary (CWU, CWD with or without obliteration) system. METHODS: Demographic characteristics and type of performed surgery were registered for 135 cholesteatomapatients from sixteen hospitals, both secondary and tertiary care institutions, across the Netherlands. In addition, the surgical reports were collected, retrospectively classified according to the contemporary system and the new system and compared. Correlations of the outcomes were calculated. RESULTS: In total, there were 112 CWU and 14 CWD (both with or without obliteration) suitable for correlation analysis. Z test for correlation between the M-stage and CWU procedure was significant for M1a and M1b procedure and significant for M2c with the CWD procedure. CONCLUSION: The newly proposed SAMEO-ATO classification seems to be more detailed in the registration of surgical procedures than surgeons currently are used to. All M-stages of the SAMEO-ATO system are correlating well to the standard CWU and CWD except one 'in between' M-stage.
Authors: Paul Merkus; Fleur A Ten Tije; Mariska Stam; Frederique M L Tan; Robert Jan Pauw Journal: J Int Adv Otol Date: 2017-07-17 Impact factor: 1.017
Authors: Matthew Yung; Adrian James; Paul Merkus; John Philips; Bruce Black; Tetsuya Tono; Thomas Linder; John Dornhoffer; Armagan İncesulu Journal: J Int Adv Otol Date: 2018-08 Impact factor: 1.017
Authors: Rishi Mandavia; Alec Knight; Alexander W Carter; Connor Toal; Elias Mossialos; Peter Littlejohns; Anne Gm Schilder Journal: BMJ Open Date: 2018-09-12 Impact factor: 2.692