1888
In 1888, Victor Alexander Haden Horsley successfully removed an intraspinal tumor (located at the sixth and seventh thoracic vertebra) for the first time 1).
1)
Cury J, Coelho RF, Srougi M. Retroperitoneal schwannoma: case series
and literature review. Clinics (2007) 62:359–62. doi:10.1590/S1807-
59322007000300024