You probably also found that ITGCN is an early stage of seminoma or embroyonal. I checked your other thread with the path report and saw that you have pure seminoma. In your case, they spotted cells just outside the main tumour that were still mutating. If you just had ITGCN cells, it means you would have a 50% chance of developing a full-blown TC within 5 years. But since you obviously had a whopper of a tumour, it's a moot point. The more important part of the path report is that it appears the tumor was confined.