====== 1887 ====== [[1886]]-[[1888]] The surgery of [[spinal cord tumor]]s dates back only to [[1887]], when a tumor was localized by Gowers and successfully removed by [[Victor Horsley]]. ---- [[Agenesis of the corpus callosum]] was first recognized and documented in [[1887]] by John Langdon Down, a British physician best known for his description of the common genetic disorder that is now called [[Down syndrome]]