GCT are very rare. 1st line of treatment is surgery. chemo is resevered for reoccourance. GCT can return at any time some do not return for decades The most implrtant things are be sure your doc has experience with GCT, follow ups every 2-3 for 2 yrs (inhibina levels and Ct scan as needed) the if no re occurance every 4-6 months after 5 yrs once a yr Don't let any one tell you that you are cured of this. There is a documented case of re occurances after 37 years!!
This is a slow growing cancer and with good follow up you should be able to keep ahead of it.
There is very little documentation on the succes of chemo since it is rare and re occurance can happen so late.
New research has isolated a gene mutation in all GCT So heres hoping they will be able to develope treatment to stop the mutation therefore cure the diease