What Is the Real Incidence of Vestibular Schwannoma?

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Abstract
In Denmark, with a population ranging from 5.1 million to 5.2 million, a uniform public health care system, and the introduction of translabyrinthine surgery in 1976, we have been able to register prospectively all diagnosed vestibular schwannomas (VS) in the entire country. During the first 7-year period from July 1976 to June 1983, the incidence was 7.8 tumors/1 million inhabitants per year.1 During the second 7-year period from July 1983 to June 1990, it increased to 9.4 tumors/1 million inhabitants per year,2 and during the third 5.5-year period from July 1990 to December 1995, the incidence increased even further to 12.4 tumors/1 million inhabitants per year.3