I realize some aren't familiar with the medical aspect of things but the likelihood of him returning this season was always extremely remote, hence the nod to August
We also don't know how aggressively they will treat things, depending on the pathology findings...I noticed this with my mother in law a few years ago...Europe (at least the Suisse) were more aggressive going after cancer than they typically are in the US...And by aggressive I do mean a combination of therapies, not the least of which is radiation, chemo & hormone replacement
All of this is moot, of course, if he comes out with a benign tumour in which case he'll simply have to let recovery take it's course...No rush