"They confirmed the existence of a tumorous abscess, with the presence of cancerous cells, which required another operation to extract the tumor completely,"
I think this may be far fetched. Going back over the articles regarding his reported illnesses which mentioned only his knee, i believe his cancer is well advanced and first started in Feb 2011.
With cancer when you first notice it, it has already been incubating for at least 3 to 6 m before. So he is into it for a full year now it seems likely.
We'll see where and when he goes to VZ. i would imagine straight to the hospital. Except that 90% of doctors are on strike right now asking for more wages. What a conundrum.
And the beat goes on.