Table 1.

All patients diagnosed with a VS in the 40-year period 1976–2015 according to management and subdivided in tumor localizations

Treatment	Initial Treatment Only			Additional Irradiation			Additional Operation			All VS Patients
	I	E	N	I	E	N	I	E	N	I	E	N	Total
Observed	973	905	0	13	49*	0	89	283	0	1075	1237	0	2312
Operated	18	1243	33	0	10	0				18	1253	33	1304
Irradiated	2	16	0				0	3	0	2	19	0	21
Total	993	2164	33	13	59	0	89	286	0	1095	2509	33	3637

Abbreviations: I = intrameatal, E = extrameatal, N = no data.

*The 3 patients were observed initially and subsequently received radiotherapy and surgery.